Targeted Therapy Directed by Genetic Testing in Treating Patients With Advanced Refractory Solid Tumors, Lymphomas, or Multiple Myeloma (The MATCH Screening Trial)

Aspirin in Preventing Recurrence of Cancer in Patients With HER2 Negative Stage II-III Breast Cancer After Chemotherapy, Surgery, and/or Radiation Therapy

Ibrutinib and Obinutuzumab With or Without Venetoclax in Treating Patients With Chronic Lymphocytic Leukemia

informCLL™: A Disease Registry for Patients With Chronic Lymphocytic Leukemia

Clinical Trial of Neoadjuvant Chemotherapy With Atezolizumab or Placebo in Patients With Triple-Negative Breast Cancer Followed After Surgery by Atezolizumab or Placebo

Ibrutinib and Obinutuzumab With or Without Venetoclax in Treating Older Patients With Untreated Chronic Lymphocytic Leukemia

Doxorubicin Hydrochloride and Cyclophosphamide Followed by Paclitaxel With or Without Carboplatin in Treating Patients With Triple-Negative Breast Cancer

Breast Cancer WEight Loss Study (BWEL Study)

Evaluation of Mammographic Breast Density in Participants With Hormone Receptor-Negative Breast Cancer Enrolled on Study A011502