Standard or Comprehensive Radiation Therapy in Treating Patients With Early-Stage Breast Cancer Previously Treated With Chemotherapy and Surgery

Whole-Brain Radiation Therapy With or Without Hippocampal Avoidance in Treating Patients With Limited Stage or Extensive Stage Small Cell Lung Cancer

Breast Cancer WEight Loss Study (BWEL Study)

Androgen-Deprivation Therapy and Radiation Therapy in Treating Patients With Prostate Cancer

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

Hypofractionated Radiation Therapy After Mastectomy in Preventing Recurrence in Patients With Stage IIa-IIIa Breast Cancer

Preventive Treatment of Oxaliplatin Induced Peripheral Neuropathy in Metastatic Colorectal Cancer (POLAR-M)

Olanzapine With or Without Fosaprepitant Dimeglumine in Preventing Chemotherapy Induced Nausea and Vomiting in Cancer Patients Receiving Highly Emetogenic Chemotherapy

S1207 Hormone Therapy With or Without Everolimus in Treating Patients With Breast Cancer

Cisplatin With or Without Veliparib in Treating Patients With Recurrent or Metastatic Triple-Negative and/or BRCA Mutation-Associated Breast Cancer With or Without Brain Metastases

Androgen-Deprivation Therapy and Radiation Therapy in Treating Patients With Prostate Cancer

Management of Tobacco Treatment Intervention in Reducing Surgical Complications in Patients With Newly Diagnosed Lung Cancer Who Smoke Cigarettes

Doxepin and a Topical Rinse in the Treatment of Acute Oral Mucositis Pain in Patients Receiving Radiotherapy With or Without Chemotherapy

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