The purpose of this research study is to find new ways of detecting and treating Hodgkin lymphoma and primary mediastinal B-cell lymphoma (a cancer of mature B-lymphocytes). It is a form of non-Hodgkin lymphoma, a type of cancer that originates in cells of the immune system, called lymphocytes. The information we learn by doing this research study may help study doctors identify new ways of treating your type of lymphoma. Participants in this study will provide archival (stored) tissue and blood samples. Participation is expected to last about 8 months. The risks and discomforts of this study are minimal. All blood specimens requested for this study will be collected at the time of routine procedures.

This is a study for patients with relapsed/refractory large B-cell lymphoma or follicular lymphoma. Patients who have either stable disease or a partial response to CD19 CAR T-Cell therapy may be eligible. The purpose of the study is to compare groups of patients who either receive therapy after CAR T-cells and patients that do not receive further therapy after CAR T-cells.

This study is for subjects diagnosed with follicular lymphoma. The purpose of this study is to assess if treatment with Mosunetuzumab can improve long term remission in patients with low tumor burden follicular lymphoma compared to rituximab. The treatment period for the Rituximab arm is approximately 40 weeks. The treatment period for the Mosunetuzumab arm is approximately 24 weeks. However the subject may remain in the study for up to 10 years for the follow-up period.

This is a randomized, phase II study for patients with Relapsed/Refractory Large B-Cell Lymphoma. The purpose of this study is to determine how long people with Large B-Cell Lymphoma can live without their disease getting worse when treated with two different combinations of cancer drugs. One group will get tafasitamab + lenalidomide + tazemetostat, and the other group will get tafasitamab + lenalidomide + zanubrutinib. The researchers want to see which combination works better. They also want to figure out the best and safest dose of each drug combination to use in future studies. Tafasitamab is a lab-made antibody that helps the immune system find and attack cancer cells. Lenalidomide is a drug that boosts the immune system and helps fight cancer. Tazemetostat is a drug that blocks a protein (EZH2) that helps cancer cells grow. Zanubrutinib is a drug that blocks another protein (BTK) involved in cancer cell survival. The treatment period may last approximately 1 year and the follow up period may last up to 3 years.