Pomalidomide Completed Phase 1 Trials for Primary Diffuse Large B-Cell Lymphoma of the Central Nervous System / Intraocular Lymphoma / B-Cell Lymphoma, Unclassifiable, With Features Intermediate Between Diffuse Large B-Cell Lymphoma and Burkitt Lymphoma / Recurrent Adult Diffuse Large Cell Lymphoma / Central Nervous System Lymphoma / Retinal Lymphoma Treatment