This phase III trial compares the effect of radiation therapy combined with hormonal therapy versus hormonal therapy alone in treating patients with low risk, early stage breast cancer with Oncotype Dx Recurrence =< 18. Oncotype DX is a laboratory test which results in a score that is used to help predict whether breast cancer will spread to other parts of the body or come back. Radiation therapy uses high doses of radiation to kill cancer cells and shrink tumors but may result in some side effects. Hormones called estrogen and progesterone may contribute to the growth of breast tumor cells. Hormone therapy, also called endocrine therapy, may stop the growth of tumor cells by blocking or removing these hormones. This clinical trial may help researchers understand if patients with low-risk, early stage breast cancer who have Oncotype recurrence score of =< 18 can safely omit radiation therapy and only be treated with hormonal therapy without losing any radiation treatment benefit.

This phase III trial studies rituximab after stem cell transplant and to see how well it works compared with rituximab alone in treating patients with in minimal residual disease-negative mantle cell lymphoma in first complete remission. Immunotherapy with rituximab, may induce changes in bodys immune system and may interfere with the ability of tumor cells to grow and spread. Giving chemotherapy before a stem cell transplant helps kill any cancer cells that are in the body and helps make room in the patients bone marrow for new blood-forming cells (stem cells) to grow. After treatment, stem cells are collected from the patient's blood and stored. More chemotherapy is then given to prepare the bone marrow for the stem cell transplant. The stem cells are then returned to the patient to replace the blood-forming cells that were destroyed by the chemotherapy. Giving rituximab with or without stem cell transplant may work better in treating patients with mantle cell lymphoma.

The purpose of this Phase 2/3, randomized, multisite, open-label, dose confirmation, and
expansion study is to evaluate the safety, and efficacy of zilovertamab vedotin (ZV) in
combination with standard of care options for the treatment of rrDLBCL. This study will be
divided into 2 parts: Dose Confirmation (Part 1) and Efficacy Expansion (Part 2) and will
enroll participants who are at least 18 years of age with rrDLBCL. The hypotheses are: ZV in
combination with rituximab, gemcitabine, and oxaliplatin (R-GemOx) is superior to R-GemOx
with respect to progression-free survival (PFS) per Lugano response criteria by blinded
independent review committee (BICR); and that ZV in combination with bendamustine rituximab
(BR) is superior to BR with respect to PFS per Lugano response criteria by BICR.