Research We Fund

Mechanisms of Inducing differentiation in CBFA2T3-GLIS2 positive AML

AMKL is a rare leukemia that largely affects infants and toddlers. Of the various subtypes of this disease, CBAF2T3-GLIS2 positive AMKL has proven particularly difficult to treat with traditional cytotoxic chemotherapies and bone marrow transplantation with dismal outcomes. The objective of this study is to investigate protein dependencies in CBAFT2T3-GLIS2 fusion positive AMKL to identify new, and desperately needed, drug targets.

A phase 1 study of STX-0712, a CCR2-CyTAC monocyte depletor, in patients with CMML

In December 2024, LLS made an equity investment in Solu Therapeutics to "Support Preclinical and Clinical Development of STX-0712 in hematological malignancies, primarily in CMML."

Solu Therapeutics is a biotechnology company dedicated to developing next-generation therapeutics to eliminate disease-driving cells in cancer, immunology and other therapeutic areas. The company’s proprietary CyTAC (Cytotoxicity Targeting Chimera) and TicTAC (Therapeutic Index Control Targeting Chimera) platforms enable the development of innovative medicines that combine the target-binding capability of small molecules with the therapeutic power of biologics.

STX-0712 is a CyTAC targeting the GPCR CCR2, which is a selective marker expressed at high levels on pathogenic monocytes. Pathogenic monocytes expressing CCR2 have been shown to be the key drivers in some hematological malignancies. 

Understanding Leukemia in Children with Down Syndrome to Develop Better Therapies

This Specialized Center of Research is focused on identifying the contributions of chromosome 21, which is present in three copies in individuals with Down syndrome (DS), to acute leukemia. Children with DS are at a 20-fold increased risk of leukemia compared to the overall pediatric population and frequently have other health issues that complicate leukemia treatment. Although acute myeloid leukemia in children with DS (ML-DS), which frequently evolves from transient abnormal myelopoiesis (TAM), has a better outcome than acute myeloid leukemia (AML) in children without DS, those who relapse following treatment face an extremely poor prognosis. Similarly, children with DS who develop B-ALL have a worse prognosis than those without DS due to excessive treatment-related mortality and increased risk of relapse. Our overarching, united goal is to develop novel therapies to cure DSassociated leukemias and to reduce the side effects of treatment in this vulnerable population. In addition to children with DS, our study has major implications in other cases of pediatric and adult leukemias. For example, chromosome 21 amplification is one of the most significant gains in several classes of malignancies, including certain subtypes of AML, hyperdiploid ALL, and iAMP21. Amplification of chromosome 21 is also a feature of the acute leukemia phase of a disease named myelofibrosis. Therefore, insights we gain from this research will impact a large group of patients with acute leukemia.

Targeting aberrant epigenetic condensates in myeloid malignancies

Genetic changes of ASXL1 are very frequent in human blood cancers. We found that the altered forms of ASXL1 protein promote blood cancers through forming tiny liquid-like droplets in the cell. In this project, we aim to develop a method to specifically break these droplets to inhibit its activity in driving blood cancers.

Targeting Microenvironment Determinants in Peripheral T-cell Lymphoma

Peripheral T-cell lymphomas are highly aggressive blood cancer that have very poor survival rate, highlighting the need for new therapies to improve patient survival. We aim to improve our understanding of the characteristics of the individual cancer cells and their interaction with surrounding cells in the tumor environment with the goal of identifying new drugs that we can validate in preclinical models and move into more efficient treatments for lymphoma patients.

Interrogating T-cell apoptotic priming to improve CAR-T persistence in treatment of lymphoid malignancies

CAR-T cells are made from a patient’s own immune cells, altered so that they specifically recognize and kill the patient’s cancer cells. They are effective in many but not all cases of B-acute lymphoblastic leukemia (B-ALL) and diffuse large B-cell lymphoma (DLBCL), among other blood cancers. In this proposal we seek to better understand ways to select T cells that will make better CAR-T cells as well as to treat CAR T cells them in ways to make them work better in the cancer patient.

Epigenetic Mechanisms and Targeting in Hematological Malignancy

Blood cancers can be caused by aberrant regulation of genes that control cell growth and development. The root cause of this problem may be the presence of mutant regulator proteins in the cell and abnormal switching on or off of target genes. Our SCOR studies the molecular basis of this gene deregulation using cell cultured in the laboratory, in human specimen and animal models.

Melnick will study the complex of proteins evolve in looping DNA segments to put gene regulatory sequences in proximity of genes critical for the development of antibody producing B cells. Abnormalities of this apparatus lead to lymphoma. Roeder will study multi-protein complexes involved in “bookmarking” chromatin (the complex of DNA and histones found in the cell nucleus) by chemical modification. He studies the proteins that initiate transcription of DNA into RNA and that assure the passage of the polymerase that creates messenger RNA across genes. Soto-Feliciano studies TRIM28, a protein essential for growth of acute leukemia will identify its mechanisms and target genes. Licht will study the role of chromatin regulators in the response of the immune system to multiple myeloma and how inhibitors of chromatin regulator inhibitors affect the tumor immune response. Patel will study in explore the three-dimensional structures of these protein complexes critical for gene regulation in blood malignancies to understand their mechanisms and develop new small molecules to modulate their action.

Impact of State Health Insurance Mandates on Affordability and Utilization of Fertility Preservation in Adolescent and Young Adults with Blood Cancers

Fertility preservation (FP) treatments can prevent infertility caused by blood cancer. However, FP costs are high, and these services are typically not covered by insurance, contributing to low utilization. New state laws require insurers to cover FP, but it is unknown if they improve access to care. Using national insurance data, this study will examine how much out-of-pocket costs remain, whether patients’ share of costs is like that of other cancer services, and whether and which types of laws increase use and affordability.

Insurance Inequities in Hodgkin Lymphoma Treatment and Survivorship in the Southeast

Black and Hispanic individuals diagnosed with Hodgkin lymphoma (HL) face worse survival rates across all ages. Using an innovative data source, this study will examine differences by insurance status in the receipt and quality of HL treatment in Aim 1 and care engagement and support after treatment (survivorship care) in Aim 2. Using diverse patient voices, this study will characterize and understand how patients make decisions about treatment and survivorship care by insurance type in Aim 3.

RECONNECT: Overcoming Racial and Ethnic Inequity in Clinical Trial Enrollment via Clinical Trial Nurse Navigation and Provider Communication Training​

This study will implement a skill-based didactic course for providers to improve the quality of communication around structural racism, mistrust, implicit biases, and clinical trial counseling. This study will also implement a culturally competent, specialized clinical trials nurse navigation program that connects patients to educational resources around clinical trials and standardizes pre-screening for new patients prior to the initial clinic visit.​

Addressing Inequities in Access to Care for Patients with Hematologic Malignancy: Understanding the Impact of Telehealth Policies in Medicaid

Telehealth could improve access for Medicaid patients with a blood cancer who experience barriers to specialty care, but not all specialists offer it. Using Medicaid data, this study will provide novel information on whether blood cancer specialists are continuing to use telehealth following the COVID-19 pandemic when telehealth use increased dramatically. This study will also examine if telehealth helps address inequities in access to specialists, including for racial/ethnic minoritized groups and those living in rural areas.

Lower Dose Mitoxantrone for Venetoclax Resistant Acute Myeloid Leukemia

Venetoclax-based regimens are the standard of care for many patients with acute myeloid leukemia (AML) and are highly active therapeutic strategies for this challenging disease. However, some patients do not respond, and most patients who do respond will relapse. We have discovered that resistance to venetoclax may be mediated by the movement patterns of calcium throughout a cell. Furthermore, we have found that mitoxantrone, a conventional chemotherapy agent, can interrupt these calcium fluctuations at very low doses. Therefore we have proposed a clinical trial using lower-dose mitoxantrone for AML patients whose disease has resistance to venetoclax-based regimens.

Spatial architecture and malignant cell characterization of nodular lymphocyte-predominant Hodgkin lymphoma

Nodular lymphocyte-predominant Hodgkin lymphoma is recognized as a disease entity in a spectrum of related diseases, including T-cell rich B-cell lymphoma. Although treatments are generally effective, a subset of patients suffers from lymphoma progression and aggressive disease transformations. Here, we propose to analyze clonal evolution of tumor cells and describe the spatial architecture of tissues with the goal to improve molecular classification and develop novel therapeutic approaches.

Harnessing METTL3 inhibition in acute megakaryoblastic leukemia driven by the t(1;22) fusion involving a member of the m6A writer complex

I want to understand how the t(1;22) translocation that involves a member of the m6A writer complex drives acute megakaryoblastic leukemia (AMKL). To identify culprit genes and pathways I will use multi-omics, including RNA, eCLIP, and TimeLapse Seq and proteomics. I will dissect the RBM15-MKL specific effects of a novel METTL3 inhibitor in primary murine and human AMKL in vitro and in vivo. My ultimate goal is to cure this rare infant leukemia by harnessing METTL3 inhibition.

Investigating the dependency for protein synthesis in Venetoclax/Azacitidine-resistant acute myeloid leukemia

Relapsed and/or refractory acute myeloid leukemia (AML) display resistance to Venetoclax and Azacitidine (Ven/Aza) with approximately one third of patients demonstrating upregulated protein synthesis. This proposal will investigate the mechanism(s) underlying the dependence of Ven/Aza-resistant AML on protein synthesis as well as the functional consequences of targeting this pathway. Successful completion of these studies will provide novel insights into Ven/Aza resistance mechanisms.

Targeting SF3B1 splicing factor mutant myeloid malignancies through dependency on GPATCH8

Mutations in RNA splicing factors, particularly those involving the core splicing factor SF3B1 are amongst the most common mutations found in myeloid neoplasms. We recently identified a cofactor protein known as GPATCH8 which is required for the aberrant function of mutant SF3B1. We now seek to understand and target the ways in which GPATCH8 and SF3B1 interact. In so doing we hope to develop new treatments for leukemias containing mutant splicing factors.

T cell Memory in Cure of Diffuse Large B Cell Lymphoma: An Investigation of the Immune Interactome

While many patients with diffuse large B cell lymphoma (DLBCL) are cured with initial treatment, some patients relapse even after multiple therapies, and their outcomes are poor; we believe that the quality of the patient’s T cell memory plays a critical role in determining how they respond to treatment. To investigate, we will analyze the response pattern of circulating immune cells in cured and relapsed DLBCL patients, as well as the immune signals generated by the tumors, and create CAR T cells from the T cells with anti-tumor properties found in cured patients. We will evaluate the ability of these CAR T cells to fight lymphoma; if successful, our research can rapidly be translated into new immune therapies for patients with high risk or relapsed DLBCL.

Towards Risk-Adapted Therapeutic Strategies in CNS Lymphoma

This project will significantly advance the treatment and prevention of CNS lymphomas in two key areas. One, we will further develop and validate candidate genomic biomarkers that identify high risk disease and that are useful in risk stratification in future clinical investigations in primary CNS lymphoma. Two, we will evaluate novel pharmacologic interventions that we hypothesize will: a) potentiate both the anti-lymphoma immune response, including agonists of the toll like receptor 7 and 8 pathway, as well as the combination of the anti-CD19 monoclonal antibody tafasitamab plus lenalidomide; and b) antagonize the NFkB pathway, via the orally-administered BTK degrader, Nx-5948, that we have demonstrated to be active in preclinical models using patient-derived CNS lymphomas.

KT1, a novel NK trispecific antibody for the treatment of AML and MDS

New treatments for AML and MDS are urgently needed. We have developed and performed preliminary testing of a novel, patent-protected, trispecific NK cell engager named KT1 which targets AML blasts and leukemia stem cells (LSCs) expressing CD33 and CD123 for elimination by effector cells that express CD16a/b. We plan to test the ability of KT1 to release cytokines and facilitate killing of CD33- and/or CD123-expressing targets by different types of CD16a/b-positive effector cell populations including resting natural killer (NK) cells, cytokine-induced memory-like (ML) NK cells, gamma/delta T cells, and macrophages both in vitro and in leukemic mice. We anticipate that a future treatment of AML and/or MDS with KT1 combined with a donor leukocyte transfer of allogeneic NK, ML NK, or gamma/delta T cells will have excellent therapeutic efficacy and a far better safety profile than many currently studied immunotherapies being tested in patients with AML or MDS.

Targeting Leukemia Stem Cells with the Novel Antibody Drug Conjugate

To improve the cure rate of patients suffering from acute myeloid leukemia (AML), our study aims to target resistant leukemia stem cells by developing an 'antibody-drug conjugate' (ADC) against CD99, a protein expressed on these cells. Initial tests of two ADC versions have shown promise in combating AML. Our next steps involve refining the anti-CD99 antibody, identifying the optimal drug for conjugation, and testing the ADC on patient-derived leukemia models. Completing these objectives will pave the way for a phase 1 clinical trial, offering a potentially transformative treatment for AML.

Mitochondrial reprogramming to restore age-driven dysfunction in T cell and boost CAR-T cell therapy

In the Cancer Immunology field, the “aging” variable has not been investigated profoundly yet, even though aging is the first factor associated to cancer. This represents a major limitation on the significance of the experimental results and their translation to the clinic. We believe that with our proposal we can shade light on important biological processes which drive immunotherapy failure. We have shown that T cell function is dependent not only on the differentiation state but also on their biological age. Thus, taking in consideration aging and the age-driven metabolic defects in T cells will help to better understand their biology and develop better strategies to boost immunotherapy.

Targeting the Osteogenic Lineage as a Therapeutic Strategy in Multiple Myeloma

Multiple myeloma causes devastating bone disease characterised by focal bone lesions and generalise bone loss, which leads to an increase in bone fractures. Current therapies only stop bones from getting worse so patients continue to suffer fractures. We discovered that inhibiting a molecule called sclerostin in mice increases bone and is much better than current treatments. In this program we will investigate whether inhibiting sclerostin is able to restore lost bone and reduce fractures in patients with myeloma.

A randomized clinical trial of oral vitamin A to reduce chronic graft versus host disease in BMT

Vitamin A is safe, well tolerated and positively affects gut immune health. Graft versus host disease (GVHD) is a life-threatening complication of bone marrow transplant (BMT) which happens due to inflammatory changes in the gut. We harnessed the anti-inflammatory properties of vitamin A by giving it to children before bone marrow transplant (BMT) and showed reduction in acute gut and moderate/severe chronic GVHD. We will validate our findings in this currently proposed study of an independent group of adult BMT patients. We will give vitamin A or placebo before BMT to adult BMT patients and observe for reduction of chronic GVHD in vitamin A recipients compared to placebo. This study will be a step forward in adoption of vitamin A as a universal strategy to prevent GVHD which is affordable ($1.25 for entire treatment), non-toxic, and doesn’t suppress the immune system.

BAFF-ligand CAR T-cells and pre-apheresis B cell lymphodepletion for relapsed / refractory CLL

Most CLL patients treated with CAR T-cells that target the CD19 antigen on the cell do not achieve a complete remission. CLL cells express other molecules on their surface; one of them is the receptor for BAFF (BAFF-R), which is highly expressed. We propose a phase I trial investigating LMY-920 for treatment of CLL. LMY-920 is a different type of CAR T-cell because it does not rely on an antibody structure to identify BAFF-R, but uses the structure of the ligand BAFF itself, and this may help avoid resistance to CAR T-cells.

We also aim to improve the quality of the CAR T-cell product by removing the circulating B cells with a monoclonal antibody prior to collecting lymphocytes for manufacture.

Targeting the cell surface U5 snRNP complex as a novel immunotherapy for AML

A major limitation of immunotherapy approaches for AML has been the lack of known targetable cell surface antigens specific to AML cells. This project characterizes the pathologic and biologic effects of a novel cell surface antigen complex uniquely present on AML cells but not normal hematopoietic precursors, known as the U5 snRNP complex. Furthermore, we will interrogates U5 snRNP complex components as novel AML-associated antigens and CAR T cells targets for AML treatment.

Novel Immunotherapy Combinations in Relapsed, Refractory Mantle Cell Lymphoma

We are evaluating two parallel clinical trials with synergistic immunotherapies in mantle cell lymphoma (MCL), including 1) tafasitamab and lenalidomide and 2) glofitamab and lenalidomide. We will investigate how these treatments impact the MCL immune microenvironment and mediate anti-tumor immune responses, and will correlate these changes with outcome.

Our goal is to develop safe, effective, and "off-the-shelf" immunotherapies to improve outcomes for patients with relapsed, refractory MCL.

Mechanisms of oncogenic transcription in NPM1-mutant myeloid leukemia

NPM1-mutated leukemia is the most common AML in adult and characterized by upregulations of HOXA/B genes and MEIS1. Given the importance of oncogenic transcriptional program, I will determine regulatory molecules that cooperate with mutant NPM1 on chromatin by combining CRISPR/Cas9 screening approach in an innovative model system of endogenous transcription reporters with proteomics approach. This will facilitate identification of novel therapeutic targets specific for NPM1-mutated AML.

Patient-Reported Outcomes and Survivorship in Histiocytic Neoplasms

Advances in the treatment of Langerhans cell histiocytosis and Erdheim-Chester disease have led to a growing survivor population; however, there is a lack of information regarding the long-term outcomes, healthcare needs, and health-related quality of life in the era of targeted therapies. We propose the creation of a large national cohort of survivors with histiocytosis to address unanswered questions, eventually leading to targeted survivorship programs for this vulnerable population.

Role of ID2 in mature T-cell lymphoma

Overexpression of ID2 is a recurrent event in mature T-cell lymphoma (TCL), and its significance is yet to be established. We will use a multidisciplinary approach combining epigenetic, transcriptomic, and proteomic analysis in human and murine models to identify the mechanisms leading to ID2 overexpression and their effect on T-cell transformation. Our goal is to define the role of ID2 in lymphomagenesis and determine its potential as a novel therapeutic target in TCL.

Multiple Myeloma Support from the Microenvironment: Bone Marrow Adipocytes and the Fatty Acid Binding Proteins

Our project’s goal is to change how multiple myeloma is understood and treated by interrogating a novel part of the cellular “soil” (the bone marrow adipocyte), in which myeloma cells, or “seeds”, land and grow. We will discover new forms of cancer drug resistance that are driven by adipocyte-derived factors and the fatty acid binding proteins. This work will expose new ways to overcome drug resistance to improve survival and quality of life for myeloma and other hematological cancer patients.

Novel targeted therapies for acute myeloid leukaemia and multiple myeloma

Outcomes for acute myeloid leukemia (AML) and multiple myeloma (MM) patients remain inadequate and new treatment options to combat resistance against existing agents are urgently needed. My research aims to identify and target selective vulnerabilities of AML and MM cells. I am particularly interested in epigenetic and metabolic pathways that control self-renewal and differentiation of hematopoietic cells and that can be leveraged to modulate cell fate for therapeutic benefit.

Limited-duration bispecific antibody therapy for multiple myeloma

Bispecific antibodies are a new, highly effective immunotherapy for multiple myeloma. Most bispecific antibody therapies have been tested as continuous therapies in which patients continue receiving the treatment until the myeloma starts growing again. Preliminary results suggest that patients with good responses may be able to stop therapy and enjoy a period of time off-therapy with close observation, which may limit long term toxicities caused by continuous therapy. We propose a clinical trial to test this limited-duration approach with recently approved bispecific antibodies for multiple myeloma.

Exploiting tumor-immune dynamics to inform curative combination therapy for follicular lymphoma

Follicular lymphoma is a common form of blood cancer, affecting 15,000 new patients annually in the United States, but it remains incurable with conventional treatments. Bispecific antibodies represent a new class of therapies that engage the immune system to attack lymphoma cells and have shown promising effectiveness in inducing remissions in patients with this disease, but even they are unlikely to be curative. Researchers from the Dana-Farber Cancer Institute here propose to analyze lymphoma cells from patients undergoing treatment with bispecific antibodies on several complementary clinical trials to determine how these cells evade the immune system and develop resistance. It is believed that such mechanisms of resistance may reveal vulnerabilities within the lymphoma cells that novel treatments can overcome in combination with bispecific antibodies to cure patients with follicular lymphoma.

A phase 2 study of RVU120, a novel CDK8 inhibitor, in combination with venetoclax in patients with AML

In August 2017, LLS TAP partnered with Ryvu Therapeutics (formerly known as Selvita) to support "A Phase 1b Study of SEL120 in Patients With Acute Myeloid Leukemia or High-risk Myelodysplastic Syndrome."

Ryvu Therapeutics is a clinical-stage drug discovery and development company focusing on novel small molecule therapies that address emerging targets in oncology using a proprietary discovery engine platform.

RVU120 (SEL120) is a highly selective first-in-class CDK8/CDK19 small molecule inhibitor. Ryvu is currently enrolling several Phase 2 clinical trials: RVU120 as monotherapy in genetically defined cohorts of patients with relapsed/refractory AML and high-risk myelodysplastic syndromes (RIVER-52, NCT06268574), RVU120 in combination with venetoclax for patients with relapsed/refractory AML (RIVER-81, NCT06191263), RVU120 as monotherapy for patients with low-risk myelodysplastic syndromes (REMARK, NCT06243458) and RVU120 as monotherapy and in combination with ruxolitinib for patients with myelofibrosis (POTAMI-61, NCT06397313).

Development of peptide-drug conjugates for the treatment of Chronic Myelomonocytic Leukaemia (CMML)

We are aiming to bring a new treatment option to patients with chronic myelomonocytic leukemia (CMML) by utilising CCL2-drug conjugates that specifically target and eliminate cancerous cells. Our leading conjugate shows potent and selective efficacy in killing CMML cells. The proposed work will help us understand how this drug works, which patients are most likely to benefit and how it can be combined with current treatments to achieve the greatest patient benefit.

CLL-1 CAR-T cells and trametinib for the treatment of Ras-mutated CMML and JMML

We hypothesize that demonstrating activity of CLL-1 CAR-T (CLL1CART) cell therapy with or without trametinib in pre-clinical models of chronic myelomonocytic leukemia (CMML) and juvenile myelomonocytic leukemia (JMML) is the most efficient method to bring cellular therapy to patients with these orphan diseases. In Aim 1, we will determine the in vitro and vivo efficacy of CAR-T cells redirected against CLL-1 using patient-derived xenograft (PDX) models of CMML and JMML. In Aim 2, we will evaluate the role of combining trametinib with CLL1CART cells. Based on our preliminary data, we hypothesize that trametinib will have direct antileukemia activity and will increase the efficacy of CLL1CART by decreasing T-cell exhaustion and augmenting T-cell fitness.

Development of cellular therapy for CMML and the Immune landscape of response and resistance

We will test the efficacy of CAR T cell therapy for CMML. We will modify the tumor microenvironment to enhance their efficacy. and we will upscale CAR T cells to the next level in terms of their genetic structure.

A phase 1 study of VIPER-101, a CD5-edited dual population chimeric antigen receptor cell therapy, to enhance immunotherapy against T-cell non-Hodgkin lymphoma

In October 2023, LLS made an equity investment in Vittoria to "Support Clinical Development of VIPER-101, a CAR-T Cell Therapy for T-cell lymphomas."

Vittoria Biotherapeutics is developing novel CAR-T cell therapies that transcend the limitations of current cell therapies. Based on technology exclusively licensed from the University of Pennsylvania, Vittoria's proprietary Senza5 platform unlocks the antitumor potential of engineered T cells and utilizes a five-day manufacturing process to maximize stemness, durability, and target cell cytotoxicity. By acting on the fundamental biology of T cells, Senza5 can be used to improve the efficacy of engineered T cell therapies with pipeline applications in oncology and autoimmune diseases.

Vittoria aims to conduct a Phase 1 dose escalation clinical trial for its lead program VIPER-101, an autologous, dual population CD5-knockout CAR-T cell therapy for T-cell Lymphoma featuring the novel Senza5 platform technology. The Phase 1 dose escalation clinical trial is expected to begin soon. Several other products are in earlier preclinical development.

Making an IMPACT on hematology care in Georgia: The Georgia Blood Cancer Trials Network (BCTN)

Winship Cancer Institute is the only NCI-Designated Comprehensive Cancer Center in Georgia, the largest state by land area east of the Mississippi River, and 8th largest state by population. The Winship IMPACT program will leverage existing relationships throughout the state to bring hematology trials to patients in their communities. The goals are to strengthen our relationship with community sites and to increase opportunities for patients to access cutting edge trials throughout our state.

Therapeutic targeting of AML stem cells 2023

The goal of this SCOR project is to identify and eradicate the root cause of acute myeloid leukemia, the so-called leukemia stem cell (LSC). In the previous cycle of this SCOR grant, we developed two unique strategies, each of which efficiently eradicates LSCs in the laboratory. Going forward, we will expand our scientific efforts to further improve these approaches and also conduct clinical trials to determine whether our approaches to killing LSCs will benefit AML patients.

Predicting progression in myeloproliferative neoplasm patients by reconstructing the history of disease in each patient

Blood cancers called myeloproliferative neoplasms occur when one of the blood stem cells picks up a mutation. Some patients stay in the chronic phase of the disease for years whereas others rapidly progress with poor outcome. We recently measured when the cancer mutation first occurs and the rate of expansion of the cancer cells in individual patients. We will develop a method that uses the history of disease in each patient to identify those that are at risk of progression.

Targeting metabolic reprogramming in MDS and AML stem/progenitor cells

Myelodysplastic neoplasms are malignant disorders driven by expansion of diseased hematopoietic stem cells and progression to leukemia. Our investigations have identified the important role of the transporter of amino acid glutamine SLC38A1 in sustaining metabolic demands of rapidly growing malignant stem cells. The goal of this project is to genetically target this transporter to understand its role on tumorigenesis and progression; and to develop SLC38A1 inhibitors as novel therapeutic tools.

Understanding Resistance Mechanism to Enhance CAR-T Immunotherapy for MCL

Mantle cell lymphoma (MCL) is an aggressive B-cell lymphoma characterized by resistance to standard treatments and short survival. For the 2023 LLS MCLII Synergistic Team Award, we have assembled a team of leaders in basic, translational, and clinical research in MCL to tackle the current significant obstacles in understanding and treating MCL. In the last decade, we investigated the therapy resistance mechanism of MCL, and pioneered clinical trials for targeted therapies (ibrutinib, lenalidomide) and chimeric antigen receptor T-cell (CAR-T) therapy. However, despite these dramatic advancements, resistance to these newer therapies, including targeted therapy and CAR-T cells, is seen in over 50% of patients. Thus, it remains an unmet need to better define the mechanisms of resistance and then develop rationally designed strategies to overcome resistance. The overall goal of this Synergistic Team Award is to develop improved curative therapies for patients with MCL at relapse. The goals will be addressed in three highly focused, independent but highly integrated projects that utilize state-of-the-art genomic technologies, patient-derived xenograft models, clinical data and primary MCL samples. With the joint effort of our laboratories, highly interactive and accomplished scientists, and physician researchers from multiple institutions with expertise in MCL and therapy, we are uniquely poised to develop improved next-generation of combination therapy for relapsed MCL patients.

MULTIlayer Predictive models for relapsed MCL after ibrutinib as first line therapY (MULTIPLY)

The MULTIPLY is a large multi-institutional project aimed at characterization of a variety of clinical predictors, both baseline and at relapse through three interconnected Work Packages (WP) with the following objectives: I) Identification of clinical factors affecting prognosis and characterization of relapses; II) Identification of lymph node biomarkers III) characterization of liquid tissue associated biomarkers. All parameters will be integrated through biostatistical and artificial intelligence tools to establish a comprehensive model of relapse prediction and optimal salvage treatment. The proposal is conducted by the Eu-MCL-Network which is the largest group conducting clinical and translational research worldwide in MCL including the largest phase III trials ever conducted. MULTIPLY will exploit the extensive dataset and tissue bank of the TRIANGLE trial that will be presented as abstract #1 at the ASH plenary session. This study will establish a novel standard by the addition of ibrutinib to first-line treatment, but will also raise relevant issues for prediction and management of disease relapse in first-line BTK-era. The expected results will be the generation of comprehensive integrated models for relapse prediction MCL and development of an effective platform to develop rational chemotherapy-free strategies based on genetic alterations of the malignant cell and innovative biomarker-driven strategies.

New Targeted Therapies for Pediatric Acute Myeloid Leukemia

Our research focuses on the preclinical evaluation of new targeted therapies for high-risk subtypes of childhood AML. We are deploying screening approaches to delete each gene, one-by-one, to identify genes whose deletion leads to death of the leukemia cells. We will evaluate drugs developed against these targets in state-of-the-art models of pediatric AML. Our goal is to translate the most promising findings to clinical trials for children with these very poor outcome subsets of AML.

A Multi-Center, Multi-National Investigation of Survivorship and Patient-Reported Symptoms in Erdheim-Chester Disease

Advances in the treatment of Erdheim-Chester Disease (ECD) have led to a growing survivor population; however, there is a lack of information on the burden of chronic health problems, symptomatology, psychological dysfunction, and mortality experienced by this group of individuals. We propose a multi-institutional international study in collaboration with the ECD Global Alliance to answer these critical questions. Results from our study will help in counseling patients in the clinic about what to expect in the future and develop interventions to reduce the risk of health issues and disease or treatment-related symptoms.

Targeting HSP70 to Immune Effector Cells to Overcome the Immune Suppressive Myeloma Microenvironment

Development of a strong anti-cancer immune response requires coordinated action of the innate and adaptive parts of the immune system, but cancer cells alter their environment to suppress virtually every step in this process, which promotes cancer progression and treatment resistance. One promising strategy could be to target Heat shock protein 70 (HSP70), which plays an important role in both innate and adaptive immunity, and we therefore developed a series of novel antibodies to HSP70, one of which cured mice of multiple myeloma. Based on strong preliminary data, we propose additional studies to better understand how this antibody activates various types of immune cells, how it works against both cancer cells and modifies the immune environment in mouse models, and how it could work even better in combination with other agents against myeloma. Since this antibody is already being developed into a drug for phase I clinical trials, these studies will directly inform its use in the clinic against multiple myeloma, and possibly against other blood-related cancers such as B-cell lymphomas.

211Astatine-CD123 Radioimmunotherapy for Cancer (Stem) Cell-Directed Treatment of Acute Leukemia

Because acute leukemias are very sensitive to radiation, radioisotopes are ideal payloads to arm antibodies against these difficult-to-cure, aggressive blood cancers. Here, we will develop fully human anti-CD123 antibodies carrying the highly potent alpha-emitter astatine-211 (211At) as a new therapy for acute leukemia. CD123 is broadly displayed on acute leukemia cells in most patients and overexpressed on leukemic stem cells but is only found on a small subset of normal blood cells, enabling the use of 211At-CD123 radioimmunotherapy in the transplant and non-transplant setting with limited toxicities to normal tissues.

Development of a novel BCL2L1 armored CAR T-cell and a tumor-immune interactome in multiple myeloma

Novel immune approaches have revolutionized the treatment paradigms in multiple myeloma (MM) with deep responses seen in heavily pretreated patients. However responses are largely not durable with significant gaps remaining in our understanding of the mechanisms mediating the immune escape to to CAR T cells and T cell engagers. Harnessing the power of single cell immunogenomics and building on the knowledge we amassed to date, we plan to address these therapeutics and mechanistic challenges firstly through the informed design and clinical development of a BCL2L1 armoured BCMA-targeting CAR T cell, and secondly by establishing a dictionary of the MM-TME interactome through serial interrogation of primary MM cells and their immunome generating a dynamic risk prediction model to better guide the delivery of immuno-therapeutics.

A phase 1b/2 study targeting apoptotic and signaling pathways in T-acute lymphoblastic leukemia

T-acute lymphoblastic leukemia (T-ALL) is an aggressive leukemia with limited treatment options after first-line chemotherapy. Our preclinical work in animal models of T-ALL demonstrated the activity of a novel-novel combination treatment strategy, which includes LP-118 (activator of suicide pathways within leukemic cells) and tyrosine kinase inhibitors (inhibiting growth-promoting LCK and ACK1 signaling pathways). Leveraging the mechanistic insights gained from our laboratory work, we propose a phase Ib/II study investigating the feasibility and efficacy of the combined LP-118, ponatinib, and salvage chemotherapy in patients with relapsed T-ALL. This precision medicine approach addresses an unmet need in a fatal disease which lacks effective therapies.

Strategic combinations to overcome therapeutic resistance and relapse in acute myeloid leukemia

Acute myeloid leukemia (AML) is the most fatal type of leukemia and has a high rate of relapse following current therapies. We have recently uncovered that RSPO3-LGR4 pathway is a key regulator of leukemia-initiating cell activity and is exclusively activated in relapsed and refractory AML. Our project aims to investigate the mechanistic link between the pathway activation and therapy resistance, and design combination therapies that would overcome resistance and improve the treatment of relapsed leukemia.

Targeting GCK as a novel and selective therapeutic strategy against RAS mutated Multiple Myeloma

RAS/MAPK mutations are the key drivers in MM, which occurs in 50% of newly diagnosed and higher in relapsed MM patients. However, RAS remains undruggable in MM. We found that RAS mutation MM growth is highly dependent on germinal center kinase(GCK). The goal of this project is to develop small molecule inhibitors against GCK with the expected outcome to provide novel treatments for relapsed/refractory and especially multi-drug resistant MM with RAS mutation, as well as other B-cell malignancies.

CD70-directed CAR T-cell therapy for the treatment of relapsed/refractory pediatric AML

In this project, we will test an innovative therapy called CAR T-cell therapy for children with a type of cancer called AML. In the laboratory, we have identified and developed a powerful CAR T-cell therapy that targets a protein called CD70 on AML cells. We propose to now develop a clinical trial in which we will study the effects of this CD70.CAR T-cell therapy in children with AML.

Development of mutant GTPase-specific degraders for peripheral T cell lymphoma treatment

This project aims to develop targeted therapies against peripheral T cell lymphoma (PTCL), a diverse group of aggressive blood cancers with poor clinical outcomes. This project is tightly relevant to cancer control and treatment, promising to advance our understanding on how blood cancers initiate and progress, and lead to new therapeutics for the treatment of peripheral T cell lymphoma (PTCL). We will develop targeted therapeutics to engage an oncogenic RHOA GTPase mutant to treat PTCL and other types of tumors with similar genetic backgrounds.

Targeting acetyl-CoA synthetase 2 to remodel obesity-evoked inflammatory microenvironment in myeloma

Our proposal aims to develop a novel strategy to improve therapeutic efficacy for patients with multiple myeloma by remodeling obesity-induced inflammatory microenvironment. We hypothesize that acetyl-CoA synthetase 2, which is stimulated by obesity, enhances inflammatory cytokine production from myeloma cells, leading to an inflammatory niche where anti-tumor function of CD8+ T cells is dampened, and tumor growth is promoted. Our study will be the first to explore a novel insight for how obesity impacts the interaction between myeloma cells and microenvironment. In preparation of using the inhibitor of acetyl-CoA synthetase 2 in the clinical setting, we will establish its potential as a single agent or in combination of other chemo- or immuno- drugs to treat myeloma.

Memory-like natural killer cells and venetoclax to eradicate measurable residual disease in AML

This proposal is to conduct a phase I (early phase) clinical trial to test whether the combination of the approved targeted therapy venetoclax with memory-like Natural Killer (NK) cells is safe and active in patients with acute myeloid leukemia (AML). Based on laboratory research at Dana-Farber Cancer Institute, we believe that the addition of memory-like NK cells obtained from an haploidentical (‘half matched’) donor will be able to eradicate residual leukemia cells left over after prior venetoclax treatment and hence prevent a future relapse of the disease. A total of 10 patients will be treated with two different doses of NK cells and a constant dose of venetoclax. We also plan scientific studies on patient samples to learn more about the function of NK cells when combined with venetoclax, evaluate for clearance of residual leukemia cells with this combination therapy and explore potential resistance mechanisms.

Health Insurance and End-of-Life Care for People with Hematologic Malignancies

Patients with blood cancers from racial and ethnic minority groups are more likely to experience suboptimal end-of-life (EOL) care. These disparities may be partially driven by health insurance differences but there is limited research examining insurance access as a potential contributor to EOL care disparities for this population. We will leverage complementary local and national datasets to assess the relationship between insurance status and type with EOL quality measures. We will also develop a Blood Cancer Health Insurance Initiative to translate our research findings to policy initiatives to dismantle disparities in access to high-quality EOL care for patients with blood cancers. We will translate our research findings to policy initiatives to dismantle disparities in access to high-quality EOL care for patients with blood cancers.

Investigating the Impact of Insurance Coverage on Access to Care and Outcomes among Lymphoma Patients

In this proposal we will investigate the association between insurance coverage and access to care, survival, and financial hardship among patients across Non-Hodgkin lymphoma (NHL) subtypes and to what extent insurance coverage explains and modifies racial disparity in access to care and outcomes. To this end, we will use the Optum Clinformatics DataMart database, the Texas Cancer Registry, the Harris Health System Cancer Database and Data from the Lymphoma Epidemiology of Outcomes (LEO) Cohort Study. These four databases will provide a sample that covers a diverse patient population in terms of insurance coverage, race and ethnicity, and geographic regions. The LEO Cohort Study also provides information on self-reported financial toxicity that is not available in cancer registries, administrative claims data, or surveys. This study will reveal whether insurance coverage, neighborhood socioeconomic factors and healthcare resources are associated with access to care and outcomes of NHL patients.

The Impossible Choice: The Role of Insurance Design on Financial Toxicity and Access to Care for Individuals with Blood Cancer

The overall goal of this project is to understand the role of insurance design on financial toxicity and access to care among individuals with blood cancer. To understand this interplay, we will use a unique and innovative linkage of the 2012-2019 Colorado Cancer Registry (CCR) to the 2013-2021 Colorado All-Payer Claims Database and the LexisNexis and TranUnion financial and life event databases. Our specific aims are to 1) Estimate the number of individuals with blood cancer who are potentially underinsured over time relative to individuals with solid tumors or no history of cancer; 2) Examine the relationship between being underinsured and experiencing financial toxicity after diagnosis in individuals diagnosed with blood cancer relative to those with solid tumors or no history of cancer; and 3) Examine differences in access to cancer care including time to treatment, treatment intensity and survival in underinsured individuals with blood cancer versus those with more generous insurance coverage.

Targeting mutated MYD88 pro-survival signaling in B-cell malignancies

Our laboratory and those of others discovered highly recurring mutations in the gene MYD88 which are found in patients with various B-cell cancers including Waldenstrom’s Macroglobulinemia (95-97%), ABC Subtype of Diffuse B-cell Lymphoma (30-40%), Primary Central Nervous Lymphoma (80%), Marginal Zone Lymphoma (10%) and Chronic Lymphocytic Leukemia (5-10%). Our laboratory and those of others showed that mutated MYD88 triggers BTK, which is the target of BTK-inhibitors like ibrutinib, acalabrutinib and zanubrutinib though complete remissions are rare with these agents largely in part because other pro-survival molecules are activated by mutated MYD88 such as HCK and IRAK1. In these studies, we will develop potent and selective inhibitors to HCK and IRAK1, including PROTACs which inhibit and degrade these molecules, using lead molecules and scaffolds whose target selectivity and activity we previously validated. We will also investigate the mechanisms underlying the inactivation of the Inhibitor of BTK (IBTK) as a potential new target for development of inhibitors for use in MYD88 mutated lymphomas.

Autologous CD22 CAR T cell Therapy for the Treatment of non-Hodgkin Lymphoma

CD19 targeting chimeric antigen receptor (CAR) T cell therapies (CAR19) are effective treatments for patients with non-Hodgkin Lymphoma (NHL), however, the majority of these patients will relapse. We have now evaluated a CD22 targeting CAR T cell therapy (CAR22) in patients who have large B cell lymphoma who have relapsed after CAR19 therapy and found that this therapy is both safe and effective resulting in a high rate of durable complete responses. We will now test this promising CAR22 for the first time in patients with other non-Hodgkin Lymphoma subtypes including mantle cell lymphoma, follicular lymphoma, and other CD22-expressing lymphomas.

Towards clinical testing of epitope editing to enable novel adoptive immunotherapies

Innovations in gene engineering have made it possible to reprogram immune cells to attack specific targets on cancer cells, allowing the first adoptive cellular immunotherapies, known as CAR T cells, to be approved by the FDA for the treatment B lymphoblastic leukemia. A similar approach is currently under development for AML, but in contrast to B-ALL, there is no leukemia-specific target which would be amenable to targeting by immune cells without incurring severe adverse effects. Here, we aim to modify normal bone marrow stem cells used for allogeneic transplantation to make them resistant to CAR-T cells, thus enabling targeting proteins essential for tumor survival without the risk of severe toxicity on the healthy tissue counterpart.

Elucidating the role of FAM72A in EBV-driven B cell lymphomagenesis

This work focuses on characterizing the role of FAM72A in EBV-driven B cell tumorigenesis. This protein is upregulated by EBV during the transformation of B cells and overexpressed in many hematologic cancers. Using a combination of in vitro and in vivo EBV transformation models, high-throughput drug screens, and structural analysis we aim to find small molecules inhibitors that target FAM72A and determine if these drugs can prevent or hinder EBV-associated B cell malignancies.

Characterization and Targeting of Tumor-Associated Monocytes/ Macrophages that Limit the Efficacy of PD-1 Blockade in Lymphoma

Inhibition of the PD-1 exhaustion pathway enables the immune system to attack cancers. PD-1 blockade is now a standard treatment for relapsed classic Hodgkin Lymphoma (cHL) and a component of experimental frontline therapy. In patients with cHL, a newly identified population of monocytes/macrophages limits the efficacy of PD-1 blockade. We will characterize and target these tumor-programmed monocytes/macrophages for therapeutic benefit in patients with cHL and other lymphoid malignancies.

Bone Marrow Stromal Cell Senescence Induced by Dnmt3a-Mutant Hematopoiesis Drives Clonal Hematopoiesis and Transformation to Myeloid Malignancy

This project focuses on how age-associated clonal hematopoiesis (CH) alters the bone marrow (BM) microenvironment, and whether this promotes transformation of CH to acute myeloid leukemia (AML). I will utilize single cell RNA-seq data, genetic knockout models, and targeted inhibitors to perturb the non-hematopoietic and hematopoietic compartments of a mouse model of CH. The goal is to determine if manipulation of the BM microenvironment can attenuate CH and prevent AML transformation.

Identifying novel regulators of leukemic progression in GATA2-deficiency syndrome

GATA2 deficiency is an inherited pediatric syndrome with a high rate of progression to myeloid malignancy, the mechanisms of which remain largely undefined. Here, we will use our recently generated mouse model, Gata2R396Q, to determine the effects of GATA2 deficiency on hematopoietic function and identify novel drivers of myeloid malignancy via focused CRISPR screens. Our work will provide further insight into the mechanisms driving leukemic progression of this syndrome.

Molecular basis and new therapeutic strategies in lineage ambiguous leukemia

Lineage-ambiguous leukemias are high-risk blood cancers with unclear biologic basis and suboptimal treatment options. Here, I will identify the cell of origin of lineage ambiguous leukemia and investigate new therapeutic strategies through in vitro and in vivo experimental modeling approaches and preclinical drug studies in patient-derived xenografts. These studies will clarify the cellular and molecular alterations driving lineage ambiguity and advance a new, rational therapeutic approach.

Investigating the impact of hotspot mutations in a chromatin reader on leukemogenesis

The goal of this proposal is to investigate the consequence of the chromatin reader eleven-nineteen-leukemia (ENL) gain-of-function mutations in the pathogenesis of leukemia. Our studies leverage the expertise in the molecular and chromatin biology of chromatin reader in leukemia utilizing mouse model, high resolution image, epigenomic and transcriptomic approaches. Our goal is to understand how chromatin reader contributes to cancer development, progression, and therapeutic outcome.

Development of novel BTK-MALT1 dual inhibitors to treat MCL

Most patients respond well to drugs that inhibit an important MCL target named BTK. However, almost all of them will eventually relapse and then do very poorly. Inhibition of MALT1, a target which is biochemically downstream of BTK, may rescue many of these patients, and inhibiting both BTK and MALT1 may be better still. Developing a drug that inhibits both targets at the same time, from the beginning of treatment, will avoid some complications and likely be best of all; we will find out.

Epigenetic Mechanisms in Acute Myeloid Leukemia

The goal of this project is to investigate the role of the epigenetic regulator Eleven-Nineteen-Leukemia (ENL) and its cancer mutations in acute myeloid leukemia (AML). Our studies leverage the expertise in chromatin biology, functional genomics, and AML modeling, as well as unique chemical compounds and mouse models. Results from this project will provide novel biological insights into our understanding of AML pathogenesis and facilitate the development of novel epigenetic therapies.

Modeling and targeting leukemic transformation of human hematopoietic stem cells

Our research seeks to understand how ordered acquisition of oncogenic mutations transforms human hematopoietic stem cells into myeloid malignancies. We leverage patient-derived induced pluripotent stem cells and primary normal and malignant stem cells to study how mutation cooperation drives leukemic progression in vitro and in vivo. Our long-term goal is to identify disease mechanisms and develop targeted therapies to eradicate malignant stem cells.

Improving CAR T-cell Therapy Efficacy in Acute Lymphoblastic Leukemia by Optimizing Design and Placement

Pediatric acute lymphoblastic leukemia (ALL) that is resistant to standard therapy is a challenge that has been partially overcome by T-cell therapy, yet relapse still occurs in up to 50%. We are conducting two clinical trials that test a next-generation T-cell therapy and the first incorporation of T-cell therapy into initial therapy. These trials will inform future development and the optimal place for this therapy with the goal of improving cure rates for children with very high risk ALL.

Clinical and molecular determinants of CLL eradication with targeted combination therapy

The genomic architecture of residual CLL and molecular determinants of disease progression after targeted combination therapy are unknown. In a phase 2 study of zanubrutinib and venetoclax in CLL, I will investigate the depth of response and genomic changes using cellular and circulating tumor DNA. Data generated from this proposal will provide foundational evidence to develop genomic markers for non-invasive monitoring of treatment response and precise prediction of outcome.

Supporting development of RNA-targeting molecules for blood cancers

In June 2023, LLS made an equity investment in Rgenta Therapeutics to "Support development of RNA-targeting molecules for blood cancers." 

Rgenta Therapeutics is developing a pipeline of oral, small-molecule RNA-targeting medicines with an initial focus on oncology and neurological disorders. Rgenta has a proprietary platform to mine the massive genomics data to identify targetable RNA processing events and to design small-molecule glues to modulate the interactions among the spliceosome, regulatory proteins, and RNAs. 

Rgenta is working closely with LLS TAP to further develop RNA-targeting molecules by supporting preclinical studies with the goal of moving towards clinical development in hematological malignancies. 

A phase 1/2 study of BI-1206, a monoclonal antibody to CD32b (FcyRIIB), in combination with rituximab in patients with indolent NHL that has relapsed or is refractory to rituximab

In January 2023, LLS made an equity investment in BioInvent to "Support Clinical Development of BI-1206 for NHL Indications and BI-1808 for T-Cell Lymphoma Indications Including CTCL."

BioInvent International AB is a clinical-stage biotech company that discovers and develops novel and first-in-class immuno-modulatory antibodies for cancer therapy, with currently four drug candidates in five ongoing clinical programs in Phase 1/2 trials for the treatment of hematological cancer and solid tumors, respectively. The Company's validated, proprietary F.I.R.S.T™ technology platform identifies both targets and the antibodies that bind to them, generating many promising new drug candidates to fuel the Company's own clinical development pipeline and providing licensing and partnering opportunities.

BI-1206 is a novel anti-FcyRIIB antibody currently being studied in two Phase 1/2 trials, in combination with rituximab in NHL (NCT03571568) and in combination with pembrolizumab in solid tumors (NCT04219254).

A phase 1/2 study of DR-01, an anti-CD94 monoclonal antibody, in patients with large granular lymphocytic leukemia or cytotoxic lymphomas

In November 2022, LLS made an equity investment in Dren Bio to "Support Clinical Development of the DR-01 Program for Rare Leukemia & Lymphoma Indications Including Large Granular Lymphocyte Leukemia (LGLL) and Cytotoxic Lymphomas."

Dren Bio is a clinical-stage biopharmaceutical company focused on developing therapeutic antibodies for the treatment of cancer, autoimmune and other serious diseases. Dren Bio’s pipeline encompasses two distinct programs, the first focusing on the engineering of antibodies with enhanced antibody-dependent cellular cytotoxicity (ADCC) capabilities and the second revolving around its proprietary Targeted Myeloid Engager and Phagocytosis Platform.

DR-01 is a novel antibody targeting CD94 which is known to be upregulated on LGLL cells. DR-01 functions through depletion of target cells via ADCC by means of fratricide, a method in which the same cell type induces ADCC on each other. A Phase 1/2 trial is ongoing to assess the safety and efficacy of DR-01 in previously treated LGLL patients and cytotoxic lymphomas (NCT05475925).

DR-0201 is a first-in-class bispecific antibody capable of engaging tissue-resident and trafficking myeloid cells to induce deep B cell depletion via targeted phagocytosis. DR-0201 is currently being evaluated in a Phase 1 study in B-NHL patients (NCT06392477).

Understanding and Overcoming Mechanisms of Immune Evasion after Allogeneic Transplant

Outcomes for patients with acute myelogenous leukemia who relapse after transplantation are dismal. This SCOR brings together an international group of collaborators with deep expertise in genomics, epigenetics, antigen presentation, and immune-regulation. They will focus on mechanisms of immune evasion by leukemia cells, identifying effective T cell responses to those evasive processes, and providing critical insights into the optimal approaches to model new and promising targets for immunotherapy with a goal of eliminating leukemia recurrence.

Research Infrastructure to Promote Enrollment of Underserved Patients on Clinical Trials

The goal of the Clinical Trial Network of South Texas is to expand access to high quality clinical trials for under-represented minority (African American and Hispanic) patients with lymphoid cancers who receives care at the UT San Antonio Mays Cancer Center (MCC) and community oncology centers in South Texas. To achieve this goal, we will leverage the existing partnership between MD Anderson Cancer Center (MDACC) and its robust clinical trial infrastructure to identify and deploy suitable clinical trials. We also will strengthen the research infrastructure at MCC and community sites, including providing equipment, clinical trial navigation support, and oversight to successfully deploy trials. By establishing MDACC/MCC as a hub for clinical trials, developing the necessary research infrastructure at community oncology centers, and allowing patients to participate in clinical trials at their local oncology centers, this IMPACT program has the potential to improve clinical outcomes.

GNAS as a new therapeutic target for MDS

Myelodysplastic syndrome (MDS) is a blood disease with poor prognosis and frequent progression to acute myeloid leukemia (AML). There are currently no effective treatments. This proposal is based on a recent discovery by my group and proposes to investigate a protein called G⍺s (alpha subunit of the stimulatory G protein), as a novel therapeutic target for MDS. If successful, this work can lead to novel therapies that can transform the treatment of MDS, AML and possibly other cancers.

Discovering the function and targeting dysregulated nuclear condensates in myeloid leukemia

Although molecular targeted therapy has dramatically changed how we treat cancer, the treatment for acute myeloid leukemia (AML) remains focused on the use of cytotoxic drugs with many patients eventually relapsing with their disease. Our studies have a uncovered a new nuclear structure that is dysregulated in myeloid leukemia. This proposal studies the identity and function of this nuclear body in human AML and strives to identify novel therapeutic strategies and targets in leukemia.

Establishing Hematology Clinical Trial Hubs within the City of Hope Community and Affiliate Network

City of Hope (COH) has embarked on a strategic initiative to optimize our clinical network and increase research capacity at our Community and Affiliate Network (CAN) sites in Southern California. I would like to spearhead this endeavor for the Hematology program at our new Irvine campus in Orange county, which is set to open in August 2022. We are employing a hub-and-spokes model, in which the Duarte main campus is the main research center, with 3-5 multi-disciplinary CAN sites ultimately designated as research hubs. These CAN sites (hubs) will serve geographically proximal practice sites (spokes), which will refer patients for treatment on clinical trials at either the CAN site itself or at the main Duarte campus. Following a 6-month pilot for optimizing staffing, investigational pharmacy setup, specimen and data collection in Irvine, an additional CAN site will be initiated each year over a 5-year period to allow a wider area of Southern California residents to have access to high quality and impactful clinical trials in Hematology. Our ultimate goal is to accrue 20-50 patients per year from the community, depending on the number of sites activated each year.

Interrogation of glutathione biology in relapsed acute myeloid leukemia stem cells

Acute myeloid leukemia (AML) is a devastating blood cancer. Most AML patients will initially respond to standard therapy; however, for many patients the disease recurs resulting in patient death. Consequently, there is an urgent need to develop new therapeutic strategies for relapsed AML patients. The objective of our proposal is to understand and target properties specific to relapsed AML cells with the overall goal of improving relapsed AML patient outcomes.

Impact of Health Insurance on Mortality for Children and AYAs Newly Diagnosed with a Blood Cancer: A Population-Based Multistate Evaluation

Lacking continuous insurance is a key barrier to access to timely care. This study will provide the first evidence of whether insurance continuity provides a survival benefit, and how Medicaid expansion under the Affordable Care Act affects insurance continuity and the associated downstream changes in survival for children, adolescents, and young adults with blood cancers. This study will inform policy interventions toward increasing access and reducing disparities in blood cancer outcomes.

Making the Right Choice: Medicare Plan Selection and Access to Cancer Care

Selecting a Medicare plan is a time-sensitive and complex decision with substantial financial implications, particularly for individuals with cancer. The proposed project evaluates the financial and health outcomes for individuals selecting different Medicare coverage options and how these outcomes vary by the presence and timing of a cancer diagnosis. The goal of this work is to identify opportunities to improve plan selection and reduce inequities in cancer care and outcomes.

Targeting aberrant non-canonical NF-κB pathway activation in B-cell lymphomas

The impact of biological heterogeneity on treatment outcomes is evidenced by a large proportion of lymphoma patients who experience relapsed/refractory disease. To address this knowledge gap, we sequenced primary lymphoma samples and found recurrent mutations in the non-canonical NF-kB pathway (NC NF-kB) and uncovered the NIK kinase as a targetable candidate. Our next steps focus on using advanced genetic modelling approaches to provide preclinical rationale for targeting NC NF-kB in lymphomas.

TCR directed immunotoxins and antibody drug conjugates for the treatment of T cell malignancies

Few treatment options are available for T cell leukemias and lymphomas, collectively called T cell cancers that affect ~100,000 patients worldwide each year. The current proposal will generate new antibodies attached to drugs and toxins that kill the T cell cancers. Importantly, the antibodies will preserve enough healthy T cells to maintain a functioning immune system. These modified antibodies may improve patient outcome and limit side effects associated with traditional chemotherapies.

Overcoming RAS-driven Mechanisms of Resistance in Leukemia

The mitogen-activated protein kinase (MAPK) pathway is activated in high-risk leukemia and is a hallmark of resistance to therapies. This project uses patient-derived xenograft models of relapsed pediatric ALL and AML with activated RAS/MAPK to test whether clinically relevant MAPK mutations activate the VAV3/RAC pathway and if pharmacological inhibition of that pathway by a small molecule we developed synergizes with a MAPK-inhibitor to provide a new treatment strategy for RAS-driven leukemia.

A Phase I/II Study of the Combination of ALX148, Rituximab and Lenalidomide in Patients with Indolent and Aggressive B-cell Non-Hodgkin Lymphoma

SIRPα+ macrophages mediate resistance to lenalidomide in B-cell lymphoma, limiting the activity of immunotherapy for these patients. Therefore, we propose a phase I/II study, investigating the safety and efficacy of ALX148, a novel fusion protein of the SIRPα binding domain, in combination with rituximab and lenalidomide in patients with B-cell lymphoma. We hypothesize that this combination will be safe and effective, providing a chemotherapy-free option for these patients.

Therapeutic exploitation of novel mouse models and metabolic interventions in leukemia

Our research program aims to gain a deeper understanding of the pathobiology of T-ALL and HSTL.

To this end, we will use novel mouse models, cutting-edge techniques and comprehensive genetic, pharmacological and metabolic interventions. In addition, we will perform unbiased experiments to identify novel therapeutic targets.

Our goal is to uncover new tools and targets for the treatment of T-ALL and HSTL, which could be used for the benefit of patients in the short/mid-term.

Analysis and therapeutic targeting of the immune regulatory and ubiquitination pathways in Anaplastic Large Cell Lymphoma and Hodgkin Lymphoma

My lab is focused on the immune regulatory mechanisms and ubiquitin-dependent machinery in lymphoma. We have established multiple high-throughput screening technologies and animal models to rapidly and accurately identify critical pathways that are suitable for targeted therapy and immunotherapy. Gaining insight into the pathological roles of these pathways can lead to improved understandings of the molecular circuitry that drives lymphoma pathogenesis and provide novel therapeutic strategies.

Genetic pathways of myeloid transformation and treatment response

Our central goal is to improve clinical outcomes in patients with myeloid malignancies through developing an enhanced mechanistic understanding of disease. We use multiomic analyses of primary patient samples combined with complementary laboratory models using mice and cell lines to generate and test our hypotheses. The results of our studies will help improve patient outcomes by identifying strategies to mitigate risk of disease progression/relapse and treatment toxicity.

Understanding the clonal origin, evolution, and progression of myeloid malignancies

The overarching focus of my research is to understand the clonal origin, evolution, and progression of myeloid malignancies and biological and clinical factors that influence the process. We tackle this question by analyzing patient samples with integrated approach combining single-cell omics, evolutionary genetics, and computational analytics. The ultimate goal of our research is to develop clinical strategies for early detection, prevention, and treatments of myeloid malignancies.

Stratified treatment of newly diagnosed MCL based on the presence or absence of high risk features utilizing non-cytotoxic agents.

We believe that regimens without chemotherapy can induce significant and durable remissions in patients with Mantle cell lymphoma (MCL). We will confirm this hypothesis by conducting two clinical trials stratified by the presence or absence of high risk features. We will utilize BH3 profiling and MRD testing to assist with predicting treatment response and remission. Our goal is to verify the efficacy of our regimen and prove the utility of BH3 profiling and MRD testing in outcome prediction.

Improving Bispecific CD20/CD19 CAR T-cell Therapy to Overcome Resistance Mechanisms in B-cell Malignancies

The objective of this proposal is to improve bispecific anti-CD20/anti-CD19 CAR T-cell activity and persistence by understanding impact of cell manufacturing parameters on final engineered CAR-T product and determining resistance mechanisms in relapsing patients. We will analyze patient apheresis, final CAR-T product, and peripheral blood samples from subjects enrolled on an ongoing clinical trial (NCT04186520). Data from these studies will advance CAR T-cell therapies for lymphoma patients.

Early Detection and Intervention in Smoldering Multiple Myeloma: population-based screening and treatment; Edit-SMM

We build on the success from the Iceland Screens, Treats, or Prevents Multiple Myeloma (iStopMM) study, where over 80,000 consented to a nationwide screening for MM precursors. A unique cohort of patients with SMM diagnosed in iStopMM will be followed by clinical evaluation, linking to central health data registries, using novel biomarkers, and in-depth genetics. With precision early treatment we aim to induce a paradigm shift leading to improved quality of life and potentially a cure for MM.

Defining the Biologic and Therapeutic Significance of the Novel Long Noncoding RNA MYND in Multiple Myeloma

Long non-protein coding RNAs (lncRNAs) are fundamental for proper cell function, but their purpose is poorly understood in multiple myeloma. To systematically identify myeloma-promoting lncRNAs, we integrated gene expression profiling of myeloma patients with high-throughput loss-of-function studies in cell lines. Moreover, we optimized strategies to antagonize myeloma-promoting lncRNAs, thus paving the way to developing lncRNA inhibitors as the next generation of therapy.

Mechanisms of Pathogenesis by MYB Fusions in Blastic Plasmacytoid Dendritic Cell Neoplasm

The transcription factor MYB has long been associated with leukemia, but how it contributes to disease is poorly understood. Fusions of MYB to other proteins, causing MYB activation, are found in patients with Blastic Plasmacytoid Dendritic Cell Neoplasm (BPDCN), but rare in other leukemias. I am using recently developed techniques to gain insight into how MYB fusions cause BPDCN. This will enable both new treatments for BPDCN and better understanding of the role of MYB in other leukemias.

Targeting Oncoembryonic Antigens ROR1 and ROR2 For Therapy Of Patients With Hairy Cell Leukemia

We will study the function of ROR1 and ROR2 on HCL cells that we have collected from 120 patients, examining whether they influence expression of genes that can promote the growth/survival of HCL cells. We have made antibodies that are highly specific for ROR1 or ROR2 that react with HCL cells, but not normal blood cells or tissues. We will determine if these antibodies can be used as naked antibodies, antibody-drug conjugates, or in chimeric receptors on T cells to specifically kill HCL cells.

Optimizing MICA/B antibody for AML by selective binding to Fc activating receptors

Acute myeloid leukemia (AML) is a blood cancer characterized by poor clinical outcomes. We developed an antibody that inhibits AML in models by triggering anti-leukemia immunity. Now we developed a new version of this antibody with higher affinity to the leukocyte receptors that mediate anti-leukemia immunity. We will establish the ability of this optimized antibody to elicit greater inhibition of AML. The studies will generate important information about how to induce anti-leukemia immunity.

Targeting splicing factor mutant myelodysplastic syndromes through GSK-3

Myelodysplasia (MDS) is a lethal stem cell disorder characterized by defective blood formation and progression to leukemia. MDS is frequently caused by mutations in splicing factors, but these mutations also create an Achille’s heel that can be targeted to kill MDS cells while sparing normal blood cells. We identified a group of clinically safe drugs that target this weakness and selectively kill MDS cells in vitro. We will test whether these drugs are effective in mouse models of MDS.

Anti-Sox2 immunotherapy to prevent multiple myeloma relapse

Advances in multiple myeloma (MM) therapy have improved survival, but serial cycles of response and relapse still lead to treatment-refractory and fatal disease in nearly all patients. To specifically target mechanisms of MM relapse, we propose to develop an immunotherapy targeting Sox2, a stem-cell transcription factor implicated in clonogenic MM growth that enables relapse.

A Polyomic Approach to Chronic Graft-versus-Host Disease (cGvHD) Biomarkers in Adults

Our team is the first to develop a polyomic pediatric cGvHD biomarker test for assessing the risk of developing cGvHD. A cooperative adult phase III clinical trial, CTTC1901, between Canada and Australia, focused on decreasing cGvHD (N=350 patients), offers an ideal opportunity to validate adult cGvHD biomarkers. This proposal will utilize the pediatric polyomic approach to validate a cGvHD risk assignment and diagnostic algorithm in adult hematopoietic stem cell transplant (HSCT).

Dissecting the biology and exploiting the dependency of myeloma cells on P300/CBP

In recent work of our collaborating labs, the protein acetyltransferases P300 and CBP emerged as potent and preferential dependencies for multiple myeloma (MM) based on genetic depletion, catalytic inhibition or chemical degradation studies. Our current project will define distinct vs. redundant molecular and biological functions of P300/CBP in MM, identify the mechanisms of resistance to their inhibition/degradation and exploit these findings to develop new therapeutic modalities to treat MM.

Immunotherapeutic Targeting of FCRL1 in CLL

Evolving insights into the B cell-restricted FCRL1 surface protein reveal that it integrates with critical signaling pathways and is a promising immunotherapeutic target in CLL. Based on preclinical evaluation of novel FCRL1 monoclonal antibodies, we propose developing chimeric antigen receptor (CAR) T cells for targeting in unique mouse models and patient-derived cells. The results will form the basis for strategic drug development and clinical testing in CLL and related B cell malignancies.

Identification and Molecular Analysis of Pre-Myelofibrotic Stem Cells

Myelofibrosis is a severe myeloproliferative neoplasm with no known cure.We have obtained unique insights into the underlying mechanisms responsible for the emergence of myelofibrosis and designed new approaches to selectively control it. By combining our mutation-specific isolation methods with single cell sequencing, we will identify myelofibrosis-initiating stem cell populations, demonstrate efficacy of stem cell targeting and enumerate residual normal stem cells to inform a Phase I/II trial.

Impact of sublethal radiation dose on tumor response, microenvironment and the immune system

Extremely low dose radiation can improve blood cancer outcomes. But the mechanisms of how sublethal radiation (SRT) affects tumors, the microenvironment and immune system remain unclear. We envision a broad, nuanced role for SRT with benefits across diverse clinical situations and propose 3 clinical trials with deep translational components. Each can be paradigm-changing, but are thematically unified to improve mechanistic understanding of how such exceptionally small doses might offer so much.

Peripheral blood-based disease monitoring by mass spectrometry in patients with multiple myeloma

The present project will investigate the ability of quantitative immune precipitation mass spectrometry (QIP-MS) to anticipate relapsed or progressive disease in peripheral blood samples from patients with multiple myeloma. In the context of the GEM2014MAIN trial (lenalidomide and dexamethasone plus or minus ixazomib as maintenance), we will assess the presence of disease by QIP-MS in parallel with conventional methods in serum and next generation flow in bone marrow samples.

Targeting Siglec15 to promote immune response to malignant B cells

The goal of this project is to explore a novel immunologic therapeutic target for hematologic malignancies, SIGLEC15 (Sig15). The central hypothesis is that Sig15 is aberrantly expressed in malignant B cells, is released to attenuate immune responses and can be targeted therapeutically to promote immune responses to malignant hematopoietic cells. This work will accelerate therapeutic exploitation of the immune system for the treatment of leukemia and lymphoma by targeting Sig15.

Genomics of childhood leukemia: Analysis of diverse, worldwide populations

Common genetic variation explains a large share of childhood leukemia in children of European ancestry and may explain the differing incidence in children of other ancestries. The Childhood Cancer and Leukemia International Consortium seeks to better understand the genomic architecture of childhood leukemia risk using its collective genomic datasets comprising >20,000 diverse children with leukemia. The results will inform risk prediction for and possibly prevention of childhood leukemia.

A phase 2 expansion study of ICT01, an anti-BTN3A monoclonal antibody, in combination with azacitidine and venetoclax in patients with AML

In June 2022, LLS made an equity investment in ImCheck Therapeutics to "Support Clinical Development of the ICT01 Program for Blood Cancer Indications."

ImCheck Therapeutics is designing and developing a new generation of immunotherapeutic antibodies targeting butyrophilins, a novel super-family of immunomodulators.

ICT01 is a humanized, anti-BTN3A (also known as CD277) monoclonal antibody that selectively activates γ9δ2 T cells, which are part of the innate immune system that is responsible for immunosurveillance of malignancy and infections. The EVICTION study is currently enrolling a Phase 2 cohort expansion of ICT01 in combination with azacitidine and venetoclax in patients with newly diagnosed acute myeloid leukemia (NCT04243499).

SHP2 and BCL2 Inhibition in Acute Myeloid Leukemia

The goal of our work is to use a “bench to bedside and back” approach to develop new treatments for patients with relapsed/refractory AML. Through genetic analysis of patients who relapse or do not respond to standard and investigational treatments, we discover potential resistance mechanisms. In the lab, we test novel drugs and identify new drug targets that may address these resistance mechanisms when used in combination with other therapies. The overall goal of our research program is to improve treatment options and survival of patients with refractory AML.

Exploiting Vulnerabilities in RNA Splicing to Treat Hematologic Malignancies

RNA splicing is a central metabolic pathway that is frequently perturbed in hematopoietic malignancies (HMs) that harbor mutations in spliceosome components (most commonly affecting SRSF2, SF3B1, U2AF1, or ZRSR2). These mutations are particularly prevalent in myeloid malignancies (e.g., MDS, MDS/MPN, sAML), but recent pan-cancer studies have implicated aberrant splicing in >30 tumor types. The Project Leaders have probed the molecular consequences of aberrant splicing and identified critical pathways that are amenable to targeted inhibition, including the DNA damage response (Graubert/Walter), the nonsense-mediated RNA decay (NMD) pathway (You/Walter), the spliceosome itself (Abdel-Wahab/Walter/Graubert), and others. To date, effective therapies for HMs have not capitalized on these unique vulnerabilities. The goal of this SCOR is to generate testable clinical hypotheses based on careful mechanistic studies in pre-clinical models and to rapidly move these ideas into the clinic in the near term.

Validation of Critical 1q21 Vulnerabilities in multiple myeloma

In previous studies of recurrently amplified 1q21 genes in myeloma, we identified ILF2 as a modulator of the DNA repair pathway, which promotes adaptive responses to genotoxic stress. Thus, ILF2 may have clinical utility as a biomarker of aggressive myeloma and blocking the ILF2-mediated repair signaling may enhance the effectiveness of current DNA-damaging agent-based therapies. We are seeking to determine the feasibility of therapeutically targeting ILF2 with antisense nucleotides and identify DNA repair effectors whose loss of function induces synthetic lethality in ILF2-depleted myeloma.

A phase 1 study of CB-011, a CRISPR-edited allogeneic CAR-T targeting BCMA, in patients with multiple myeloma

In February 2021, LLS made an equity investment in Caribou Biosciences to support "A Phase 1, Multicenter, Open-Label Study of CB-011, a CRISPR-Edited Allogeneic Anti-BCMA CAR-T Cell Therapy in Patients With Relapsed/Refractory Multiple Myeloma." 

Caribou is a leading clinical-stage biotechnology company, co-founded by CRISPR pioneer and Nobel Prize winner Jennifer Doudna, Ph.D., using next-generation CRISPR genome-editing technology to develop “off-the-shelf” (allogeneic) CAR therapies for hard-to-treat blood cancers.

CB-011, Caribou’s second allogeneic CAR-T cell therapy, targets BCMA for the treatment of relapsed/refractory multiple myeloma and is immunologically cloaked for enhanced persistence. The CaMMouflage Phase 1 clinical trial, a multicenter, open-label study to evaluate the safety and efficacy of a single dose of CB-011 in adult patients with relapsed or refractory multiple myeloma (r/r MM), is currently enrolling (NCT05722418).

A phase 2 registration-directed clinical study of ziftomenib (KO-539), a menin inhibitor, in patients with NPM1-mutant relapsed or refractory AML

Starting in July 2010, LLS TAP supported a promising University of Michigan research project led by Jolanta Grembecka, PhD, to develop new treatments for patients with a rare and lethal subtype of leukemia. Through TAP, LLS engaged chemists to improve the properties that produced lead compounds that exhibited potent anti-leukemic activity. In 2014, LLS introduced Kura Oncology to the project that ultimately led to Kura Oncology completing a licensing agreement with the University of Michigan to continue to develop these molecules.

Kura Oncology is a clinical-stage biopharmaceutical company committed to realizing the promise of precision medicines for the treatment of cancer with a pipeline that consists of small molecule drug candidates that target cancer signaling pathways.

Ziftomenib (KO-539) is selective small molecule inhibitor of menin. Ziftomenib is currently in a Phase 2 registration-directed clinical trial in patients with NPM1-mutant relapsed or refractory AML (NCT04067336). 

A phase 2 study of RVU120, a novel CDK8 inhibitor, in genetically defined cohorts of patients with AML and high-risk MDS

In August 2017, LLS TAP partnered with Ryvu Therapeutics (formerly known as Selvita) to support "A Phase 1b Study of SEL120 in Patients With Acute Myeloid Leukemia or High-risk Myelodysplastic Syndrome."

Ryvu Therapeutics is a clinical-stage drug discovery and development company focusing on novel small molecule therapies that address emerging targets in oncology using a proprietary discovery engine platform.

RVU120 (SEL120) is a highly selective first-in-class CDK8/CDK19 small molecule inhibitor. Ryvu is currently enrolling several Phase 2 clinical trials: RVU120 as monotherapy in genetically defined cohorts of patients with relapsed/refractory AML and high-risk myelodysplastic syndromes (RIVER-52, NCT06268574), RVU120 in combination with venetoclax for patients with relapsed/refractory AML (RIVER-81, NCT06191263), RVU120 as monotherapy for patients with low-risk myelodysplastic syndromes (REMARK, NCT06243458) and RVU120 as monotherapy and in combination with ruxolitinib for patients with myelofibrosis (POTAMI-61, NCT06397313).

A phase 1/2 study of IMT-009, an antibody targeting CD161, in patients with advanced solid tumors or lymphomas

In August 2021, LLS made an equity investment in Immunitas Therapeutics to support the "Phase 1 Clinical Development of IMT-009, an Antibody Targeting CD161, in Patients With Advanced Solid Tumors or Lymphomas."

Immunitas is committed to discovering and developing novel, differentiated therapeutics for patients with cancer. Their discovery engine combines deep expertise in single-cell genomics with customized machine learning approaches to elucidate immune cell populations that are key actors in immuno-oncology. Immunitas complements this process with bespoke in-house therapeutic discovery rooted in antibody display and immunization. The company was founded by Longwood Fund with leading scientists from Dana-Farber, MGH, the Broad, and MIT.

IMT-009, a first-in-class NK and T cell modulator targeting CD161, is being developed for the treatment of solid tumors and lymphomas and is in a Phase 1 clinical trial (NCT05565417). 

A phase 1 study of CB-010, a CRISPR-edited allogeneic CAR-T targeting CD19, in patients with B-cell NHL

In February 2021, LLS made an equity investment in Caribou Biosciences to support "A Phase 1, Multicenter, Open-Label Study of CB-010, a CRISPR-Edited Allogeneic Anti-CD19 CAR-T Cell Therapy in Patients With Relapsed/Refractory B Cell Non-Hodgkin Lymphoma."

Caribou is a leading clinical-stage biotechnology company, co-founded by CRISPR pioneer and Nobel Prize winner Jennifer Doudna, Ph.D., using next-generation CRISPR genome-editing technology to develop “off-the-shelf” (allogeneic) CAR therapies for hard-to-treat blood cancers.

CB-010, Caribou’s lead allogeneic CAR-T cell program, targets CD19 and is being evaluated in a Phase 1 clinical trial expansion cohort for second-line patients with large B cell lymphoma (LBCL). (NCT04637763). It is the first clinical-stage allogeneic CAR-T cell therapy in which PD-1 was genetically disrupted in the CAR-T genome, leading to more durable anti-tumor activity in pre-clinical studies.

Development of therapeutic strategy for the treatment of MDS

TP53 mutations are present in 10% of MDS cases and are associated with reduced survival and poor prognosis. However, the effect(s) of TP53 mutations on MDS pathogenesis is unknown. We discovered that MDS cells with TP53 mutations display significant alterations in pre-mRNA splicing due to increased EZH2 activity. We will investigate the mechanisms by which TP53 mutations drive MDS pathogenesis and determine the impact of inhibition of EZH2 and the spliceosome on MDS cells with TP53 mutations.

Dissecting the heterogeneity of leukemic and pre-leukemic clonal expansion to identify genes associated with leukemia relapse and genesis

My research investigates the heterogeneity of leukemic and pre-leukemic clonal expansion to identify genes associated with leukemia relapse and genesis. Contrary to conventional studies analyzing cell mixtures, my research uniquely probes the specific cells underlying leukemia development. We expect to identify the key cellular and molecular events that drive leukemia onset and relapse. These findings will help improve diagnosis and can serve as new therapeutic targets for treating leukemia.

Neonatal origins of pediatric AML

Coming soon.

Defining the role of DNA methylation modifier mutations in reshaping blood differentiation topology

Coming soon.

Novel immunotherapeutic strategies in infants with high risk AML

Treatment of AML in infants is especially challenging given unique genetic make-up of the disease as well as specific susceptibilities of the host. We will leverage the RNA Seq data from over 2000 patients to discover and validate novel targets (cell surface proteins), and in collaboration with Dr. Correnti (Protein Scientist) and Dr. Fry (CART development expert) generate and test novel antibodies, ADCs, BiTEs and CARTs directed against leukemia-specific targets in infants.

Synergistic targeting of metabolic and epigenetic vulnerabilities in leukemia stem cells

Our lab is focused on identifying unique features that distinguishes acute myeloid leukemia (AML) stem cells from normal blood-forming stem cells. The cells that make more AML cells than others are called AML stem cells, and these cells need to be eradicated to achieve deep therapeutic responses. We believe targeting metabolism may achieve this goal and found strategies to target AML stem cell metabolism without harming normal stem cells. We hope that our study will lead to improved therapies against AML targeting metabolism to achieve deep remission with little toxicity.

REACH: Recruitment Expansion through community Access to Clinical trials in Hematologic malignancies

Mayo Clinic Rochester (MCR) is a tertiary center with 35,000 blood cancer visits annually. Circa 70% of patients referred to MCR come from 5 states: MN, WI, IA, SD and ND inhabited by 10,483,946 people living primarily in a rural setting. To improve local care access, MCR has developed the Mayo Clinic Health System (MCHS), a network of 17 community sites of which 7 have oncology care. In 2018, the MCR joined with the University of Minnesota to establish the Minnesota Cancer Clinical Trials Network (MCCTN) that includes 18 sites. These 2 networks encompass large areas of rural, economically disadvantaged populations and unrepresented minorities, including Native Americans, Latinos and African Americans. The MCR is actively supporting clinical research at MCHN sites, including access to clinical trials (CTs) portfolio. Oncology CTs are open in some of MCHS sites but of the 25 currently open, only 2 CTs target blood cancers. The University of Iowa/Mayo Clinic Lymphoma SPORE has opened epidemiological trials in the MCHS. The MCCTN is new and none of the 3 open CTs are hematologic. Lymphoma study accruals from the MCHS include 42 patients (1 therapeutic; 41 lymphoma epidemiology). The robust epidemiology trial accrual demonstrates that these new lymphoma patients are being seen at these sites and are willing to consent. While many patients from rural communities are seen at MCR for initial diagnosis, these patients often are unable to enroll into trials due to distance from MCR. Feedback from providers from both Networks identified barriers to accrual to lymphoma CTs: i) lack of local lymphoma trials; ii) competition with the more common solid tumor CTs for scarce resources; iii) very busy clinical practices that limits dedicated time for enrollment of intensive complex hematology patients. The practice pressure particularly affects patients requiring language or financial assistance. In this proposal, we outline our plans to address the 3 barriers identified.

SCOR in High Risk Plasma Cell Dyscrasias

Dr. Orlowski assembled an experienced, collaborative group of researchers who work in a multidisciplinary manner on projects focusing on basic, translational, and clinical aspects of smoldering multiple myeloma (SMM) and multiple myeloma (MM). Both high risk SMM and MM represent important and urgent unmet medical needs for the development of novel, more effective therapies.

Targeting kinase-dependent dysregulation of transcription factor control in acute myeloid leukemia

Defining mechanisms of dysregulated gene control are central to understanding cancer and the development of effective therapies. Our research is focused on the mechanisms of gene control dysregulation in acute myeloid leukemia (AML), a refractory form of blood cancer that affects both children and adults. Using new methods for manipulating proteins, we are defining essential mechanisms by which AML cells enable cancer-causing gene expression. This work also allowed us to develop new drugs to specifically block this in cancer, but not healthy cells. Ongoing work aims to define precise mechanisms of cancerous gene control and develop definitive treatments for its control.

Targeting DCAF1 as a novel treatment strategy for therapy resistant multiple myeloma

We have identified the multi-domain protein DCAF1 as a genetic dependency in multiple myeloma and developed a series of potent on-target DCAF1 inhibitors that have a unique mode of action compared with existing therapies. In this proposal we will continue the detailed molecular characterization of our lead compound Vpr8. In parallel, using Vpr8 as the scaffold, we will develop a new series of PROTAC drugs that engage the ubiquitin ligase activity of DCAF1-containing E3 complexes.

Pan-heme CAR: Anti-CD38 CAR T cells for myeloid, lymphoid and plasma cell malignancies

Our SCOR team has a razor-sharp focus on an exciting new treatment modality for blood cancers: chimeric antigen receptor (CAR) T cells. T cells can be trained to target cancer cells by genetic modification. In fact, previous support from the Leukemia & Lymphoma Society allowed us to successfully develop CAR T cells targeted to CD19, a pan-B cell marker. This treatment, generically called CART-19, was approved by the FDA in 2017 for the treatment of B-cell acute lymphoid leukemia (B-ALL) and in 2018 for some non-Hodgkin lymphoma (NHL), with promising results in other B cell malignancies such as chronic lymphocytic leukemia (CLL). Thus, the development of a single therapy for a single disease (initially, CLL) paid handsome dividends when translated to a broader range of CD19-expressing malignancies (ALL, NHL).

Understanding SARS-Cov-2 evolution in haemato-oncology patients

Through phenotypic and functional studies of immune cells, proteomic mapping of immune responses and genomic studies of variant strains, this project will assess the evolution of natural SARS-CoV-2 infection and COVID-19 vaccine responses in hemato-oncology patients. Integration of immunological profiles and genomic outcomes with clinical characteristics will inform future best patient management, especially for those patients at risk of prolonged infection with long term viral shedding.

Detection and Targeting of Enzymatic Base Editing Deregulation in Leukemia Stem Cells

Dr. Jamieson is examining the role of two enzymes (APOBEC3 and ADAR1) known to mutate DNA and RNA, and their role in acute myeloid leukemia (AML) and disease relapse, particularly in elderly patients.

Improving BTK Inhibitor Therapy in Chronic Lymphocytic Leukemia Through Rational Combination Strategies

Ibrutinib is a targeted oral treatment for CLL that is safe and highly effective, however it must be given indefinitely which leads to chronic side effects and allows resistance to develop. We are conducting two clinical trials that add a second drug to ibrutinib to eliminate the remaining leukemia or ibrutinib-resistant leukemia cells. If these trials are successful, people taking CLL with or without resistance may be able to stop treatment in remission after taking an ibrutinib combination.

Reaching out to underserved & minority patients with hematological diseases in the southeastern US

Vanderbilt-Ingram Cancer Center (VICC) is the only NCI designated cancer center that serves both adult and pediatric populations in TN, one of the highest cancer-mortality states in the country. In fact, TN rural dwellers encompass about 30-50% of the states’ population, many with lower per-capita income and high school graduation rates. Influencing cancer care by facilitating underserved and minority populations to access therapeutic clinical trials as well as those focused on screening and prevention strategies remains a cornerstone objective. The Vanderbilt Health Affiliated Network (VHAN) serves as the largest provider for an organized network of hospitals, clinics, and health systems across TN. This network encompasses 12 health systems and 61 hospitals. Within VHAN, the VICC has had a formal affiliation with Baptist Memorial Healthcare Corporation (BMHCC) since 2012. BMHCC is affiliated with 22 hospitals and provides care for 8000 new cancer patients (pts) annually covering 111 counties totaling 4.3 million people. This includes 44% of the 252 counties and parishes in the Delta Regional Authority, congressionally acknowledged as the most indigent population in the US. The primary objective of the VICC community center affiliation with BMHCC is to enhance the regional level of cancer care and to advance cancer research efforts. VICC has provided guidance on a regular basis to assist BMHCC in the establishment and implementation of the Minority and Underserved National Cancer Institute Community Oncology Research Program (NCORP) grant as a successful and sustainable program. BMHCC has become amongst the top recruitment sites for NCORP, with steady growth in the proportion of rural pts seen across the health system. VICC continues to be a resource for BMHCC on providing consultations, training, and best practices for specialized services such as clinical research, radiation oncology, cancer screening, stem cell transplantation and community engagement.

Investigating the role of CREBBP mutations and epigenetic crosstalk in B-cell lymphoma

We seek to understand the genetic and epigenetic etiology of B-cell lymphoma and how deregulation of normal epigenetic programs perturb developmental programs and immune interactions. We approach this using a variety of genomic technologies to interrogate primary human tumors, CRISPR-engineered cell lines, patient-derived xenograft models and transgenic mouse models with different genetic lesions. We hope to understand how genetic and epigenetic changes associated with B-cell lymphoma create dependencies or characteristics that can be targeted through rational therapeutic interventions to improve patient outcomes.

Targeting cathepsin G in acute myeloid leukemia

We developed a chimeric antigen receptor (CAR) targeting an epitope of the myeloid associated antigen cathepsin G that is processed and presented in the contest of the MHC complex in myeloid leukemic cells. T cells expressing the cathepsin G specific CAR (CG1.CAR) recognize HLA-A2+ myeloid target cells expressing cathepsin G. We intend to study efficacy and safety of CG1.CAR-T cells in preclinical models in preparation of a phase I clinical study in patients with relapsed/refractory AML.

A precision-based all-oral combination of venetoclax, oral decitabine, and IDH1/2 targeted inhibition for patients with IDH1 or IDH2 mutated AML

My ultimate goal is to develop more effective, better tolerated, and individualized treatment for patients with AML. This project focuses on AML patients with IDH1 or IDH2 mutations, with a clinical trial evaluating a combination of three agents which are effective in IDH-mutated AML. While these therapies are not curative on their own, my hope is that this combination will lead to a practice changing all-oral, outpatient, and well-tolerated curative strategy for patients with IDH-mutated AML.

Enhancing efficacy of cyclin-dependent kinase inhibitors in diffuse large B-cell lymphoma

Nearly half of patients with diffuse large B-cell lymphoma (DLBCL), ultimately fail current therapies and die from their disease. Selective targeting of cyclin-dependent kinase 9 (CDK9) is a promising strategy, as evidenced by potent anti-tumor effects in preclinical models of DLBCL. Yet tumors evade therapy by developing resistance. This proposal seeks to both elucidate and circumvent the oncogenic events underlying this resistance in order to offer novel therapeutic approaches to treat DLBCL.

Therapeutic modulation of serine availability for SF3B1-mutant myeloid malignancies

Mutations in the spliceosome gene SF3B1 are common in myeloid malignancies, but they are currently untargetable. Our previous work has shown that SF3B1 mutations reprogram energy metabolism and create vulnerability to restriction of the nonessential amino acid serine. Here we propose a preclinical project studying PEGylated cystathioinine beta synthase (pCBS), a recombinant enzyme that catabolizes serine, as a treatment for SF3B1-mutant myeloid malignancies.

All-in-one for myeloma: a single therapy to combine CAR T cells and bispecific antibodies to engage both innate and adaptive immune responses

This project is designed to develop a novel cell therapy to treat relapse/refractory multiple myeloma (MM), an incurable cancer. We target BCMA, a protein highly expressed on MM compared to normal cells, with CAR T cells that also secrete a bispecific antibody that can engage all cytolytic cells, including various endogenous T cells, natural killer (NK) cells, and NKT cells to kill MM cells. We aim to complete all preclinical studies so that the therapy is ready for future clinical studies.

Genetic roadmaps to synthetic lethality in myeloproliferative neoplasms (MPNs)

Myeloproliferative neoplasms (MPNs) carry JAK2(V617F), MPL(W515L) and mutations in calreticulin (CALRmut) often accompanied by mutations in TET2, ASXL1, DNMT3A, EZH2, and other genes. We will develop a strategy based on gene mutation profiling to identify MPNs displaying specific defects in DNA repair. These defects will be then explored by specific DNA repair inhibitors to eliminate quiescent and proliferating MPN stem and progenitor cells without affecting normal cells and tissues.

Precision Medicine Inhibitor and Immunotherapy Approaches for High-Risk Childhood Leukemias

Dr Tasian’s scientific passion is successful development of precision medicine therapies for high-risk childhood leukemia. Her translational laboratory research program focuses upon investigation of kinase inhibitors and chimeric antigen receptor (CAR) T cell immunotherapies in childhood ALL and AML using primary patient specimens and patient-derived xenograft models. Through her laboratory and clinical research, she aspires to improve cure rates and minimize toxicities for children with leukemia.

Discovery of Aging-Driven Mechanisms Causing Clonal Hematopoiesis (CH) and its Progression to Hematological Malignancy

My research focuses on why and how risk of acute myeloid leukemia (AML) increases with aging. Studying naturally aged mouse models in combination with mice engineered to express mutations commonly found in human blood stem cells with aging, we are investigating whether certain inflammatory factors that increase during aging increase the risk of leukemia. My goal is to identify biomarkers to assess risk of AML development in aging individuals and define new therapeutic targets to prevent AML.

T cells with native and chimeric receptors against multiple tumor targets for acute myeloid leukemia

Adoptive T cell therapies for acute myeloid leukemia face numerous hurdles such as limited target antigens, immunosuppressive tumor environment as well as the loss of efficacy due to downregulation of the targeted antigen. The goal of our project is to address some of these challenges with a single T cell product targeting multiple tumor associated antigens that have limited expression on healthy tissues via a novel combination of native T cell receptor and gene engineered CAR targeting.

Gut microbiota modulation to prevent progression of smoldering multiple myeloma to active disease

Blocking the progression of smoldering multiple myeloma (SMM) to active MM is an unmet clinical need. In primary mouse models of MM, we aim at demonstrating that modulation of the gut microbiota by vaccination against the commensal Prevotella heparinolytica and/or colonization by P. melaninogenica, also in combination with anti-PD-L1 antibodies, inhibit the progression of asymptomatic MM to full-blown disease. Our findings are expected to provide the ground for clinical trials in SMM patients.

Restoring lymphoma immunosurveillance by combined EZH2 inhibition and immunotherapy

The project builds on evidence that mutations leading to persistent EZH2 activation drive germinal center B-cell lymphomagenesis by disrupting T-cell surveillance, and will test the hypothesis that EZH2 inhibition synergizes with immune checkpoint blockade and/or co-stimulation to eradicate these diseases. These results will provide the rationale for clinical development of precision-medicine immune-epigenetic combination therapies for lymphomas where these mechanisms are specifically altered.