Lenalidomide in Improving Immune Response to Vaccine Therapy in Patients With Chronic Lymphocytic Leukemia, Small Lymphocytic Lymphoma, or Monoclonal B Cell Lymphocytosis

Stage I Chronic Lymphocytic Leukemia Clinical Trial

Official title: Impact of Short Term Lenalidomide on Immune Response to Prevnar 13® in Individuals With Chronic Lymphocytic Leukemia (CLL), Small Lymphocytic Leukemia (SLL), and Monoclonal B Cell Lymphocytosis (MBL)

Status Terminated

Clinical Trial Summary

This randomized phase II trial studies how well lenalidomide improves immune response to pneumococcal 13-valent conjugate vaccine in patients with chronic lymphocytic leukemia, small lymphocytic lymphoma, or monoclonal B cell lymphocytosis. Biological therapies, such as lenalidomide, use substances made from living organisms that may stimulate or suppress the immune system in different ways and stop cancer cells from growing. Lenalidomide may also improve the effectiveness of pneumococcal 13-valent conjugate vaccine that is used to prevent infection.

Clinical Trial Description

PRIMARY OBJECTIVES:

I. To assess the ability of a 6 week course of low dose lenalidomide to improve the proportion of patients with monoclonal B cell lymphocytosis (MBL) and chronic lymphocytic leukemia (CLL) who develop an immune response to pneumococcal vaccination as measured by the proportion of patients with >= 4-fold rise from pre-vaccine (day 15) for >= 2 of the 3 serotypes measured at 28 days post-vaccination by opsonophagocytic activity (OPA) of antibodies from sera.

SECONDARY OBJECTIVES:

I. Evaluate disease status by physical exam and complete blood counts in patients participating in each arm of the study at the time of the 6 week assessment of immune response.

II. Evaluate time to treatment for progressive CLL for patients on each study arm.

III. Evaluate the adverse events profile in each study arm.

TERTIARY OBJECTIVES:

I. To assess the immune response to pneumococcal vaccination as measured by fold-change from pre-vaccine (day 15) to 28 days post-vaccination in OPA geometric mean titers (GMT) of antibodies from sera.

II. To assess the immune response to pneumococcal vaccination as measured by fold-change from pre-vaccine (day 15) to 28 days post-vaccination in quantitative Streptococcus pneumoniae immunoglobulin G (IgG) GMT of antibodies from sera.

III. Evaluate the effect of 6 weeks of low dose lenalidomide on global immune function including T-cell repertoire, T-cell immune synapse, serum immunoglobulin levels, and absolute numbers of T-cell and natural killer (NK) cells.

OUTLINE: Patients are randomized 1 of 2 treatment arms.

ARM I: Patients receive lenalidomide orally (PO) once daily (QD) on days 1-42 and pneumococcal 13-valent conjugate vaccine intramuscularly (IM) on day 15.

ARM II: Patients receive pneumococcal 13-valent conjugate vaccine IM on day 15.

After completion of study treatment, patients are followed up at day 28, and then every 6 months for up to 2 years. ;

Related Conditions & MeSH terms

• Leukemia
• Leukemia, Lymphocytic, Chronic, B-Cell
• Leukemia, Lymphoid
• Lymphocytosis
• Lymphoma
• Monoclonal B-Cell Lymphocytosis
• Stage 0 Chronic Lymphocytic Leukemia
• Stage I Chronic Lymphocytic Leukemia
• Stage I Small Lymphocytic Lymphoma

• NCT number: NCT02309515
• Study type: Interventional
• Source: Mayo Clinic
• Status: Terminated
• Phase: Phase 2
• Start date: June 11, 2015
• Completion date: July 21, 2017