Study Status: Terminated
Recruit Status: Terminated
Study Type: Interventional
Official Title: A Study of Immune-adjuvant Effect of Lenalidomide in Patients With Chronic Lymphocytic Leukemia and Hypogammaglobulinemia and Impaired Response to Vaccinations - RV-CL-CLL-PI-002544
Brief Summary: The goal of this clinical research study is to learn if lenalidomide can increase the level of immunoglobulins (parts of the blood that may help to improve the immune system's function) and/or will improve the protective effect of the flu and pneumonia vaccines in patients with CLL.