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Constellation Pharmaceuticals

Partnership since July 2012 (Acquired by MorphoSys in July 2021)


In July 2012, LLS began its partnership with Constellation to support three first-in-human Phase 1 clinical trials for blood cancer patients and is currently supporting "A Phase 3, Randomized, Double-blind, Active-Control Study of CPI-0610 and Ruxolitinib vs. Placebo and Ruxolitinib in JAKi Treatment Naive MF Patients."

Constellation Pharmaceuticals is a clinical-stage biopharmaceutical company developing novel therapeutics that selectively modulate gene expression to address serious unmet medical needs in patients with cancer. The Company has a deep understanding of how epigenetic and chromatin modifications in cancer cells and in the tumor and immune microenvironment play a fundamental role in driving disease progression and drug resistance. Constellation is driving development of the BET inhibitor pelabresib (CPI-0610) for the treatment of myelofibrosis.

Constellation developed CPI-0610 which inhibits members of the BET family of chromosome-binding proteins to selectively inactivate various cancer-promoting genes, including MYC, a master control gene that plays a role in many cancers. Inhibiting BET can kill a broad range of blood cancers.

After completing Phase 2 trials in myelofibrosis, Constellation is currently enrolling myelofibrosis patients in a Phase 3 clinical trial of the BET inhibitor CPI-0610 (NCT04603495).

For more information about Constellation, visit

Recent News

  • July 15, 2021 - MorphoSys announced the successful completion of its previously announced cash tender offer for all outstanding shares of Constellation Pharmaceuticals, Inc. for a total equity value of the transaction of approximately $1.7 billion. MorphoSys will promptly complete its acquisition of Constellation through a second step merger of MorphoSys Development Inc. with and into Constellation resulting in Constellation surviving as an indirect wholly owned subsidiary of MorphoSys.
  • June 11, 2021 - announced that three posters relating to the MANIFEST clinical trial of pelabresib (CPI-0610) in myelofibrosis (MF) were published online in association with the European Hematology Association (EHA) annual meeting. The data in these posters from the MANIFEST Phase 2 clinical trial reflect an analysis of pelabresib clinical and translational activity.