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Glossary Results

Relapsed CLL

CLL that responded to treatment but then returns.

Refractory CLL

CLL that has not responded to initial treatment. Refractory disease may be disease that is getting worse or staying the same (stable disease).

CD38

An antigen on CLL cells and other cells. The expression of CD38 may be a marker to assist in predicting CLL progression.

Richter transformation

In a small number of patients, there is a progression in their disease. In these patients, CLL takes on the characteristics of an aggressive lymphoma. This change is not a second cancer, but a transformation of the CLL cells.

Small lymphocytic lymphoma (SLL)

A disease with symptoms and treatment that are much like CLL. SLL starts in a lymphocyte in a lymph node. CLL starts in a lymphocyte in the marrow.

Immunoglobulin Heavy Chain Variable Region (IgHv) Gene Status

A marker that can distinguish between CLL subtypes (unmutated IgHv and mutated IgHv). People with CLL with unmutated IgHv gene status may have a more progressive form of the disease.

Zap-70

An abbreviation for the cell protein “zeta-associated protein 70.” A high level of ZAP-70 expression on the cells of patients with B-cell CLL is one of several factors that may predict more progressive disease. Outside of a research laboratory this test is generally not very reliable and should not be used.

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Glossary Results

Relapsed CLL

CLL that responded to treatment but then returns.

Refractory CLL

CLL that has not responded to initial treatment. Refractory disease may be disease that is getting worse or staying the same (stable disease).

CD38

An antigen on CLL cells and other cells. The expression of CD38 may be a marker to assist in predicting CLL progression.

Richter transformation

In a small number of patients, there is a progression in their disease. In these patients, CLL takes on the characteristics of an aggressive lymphoma. This change is not a second cancer, but a transformation of the CLL cells.

Small lymphocytic lymphoma (SLL)

A disease with symptoms and treatment that are much like CLL. SLL starts in a lymphocyte in a lymph node. CLL starts in a lymphocyte in the marrow.

Immunoglobulin Heavy Chain Variable Region (IgHv) Gene Status

A marker that can distinguish between CLL subtypes (unmutated IgHv and mutated IgHv). People with CLL with unmutated IgHv gene status may have a more progressive form of the disease.

Zap-70

An abbreviation for the cell protein “zeta-associated protein 70.” A high level of ZAP-70 expression on the cells of patients with B-cell CLL is one of several factors that may predict more progressive disease. Outside of a research laboratory this test is generally not very reliable and should not be used.