Recurrent Classic Hodgkin Lymphoma

Evaluating the Addition of Maintenance Immunotherapy Compared to the Usual Treatment of Chemotherapy and Autologous Stem Cell Transplant Alone for High-risk Patients With Relapsed or Refractory Hodgkin Lymphoma

Brentuximab Vedotin and Nivolumab With or Without Ipilimumab in Treating Patients With Relapsed or Refractory Hodgkin Lymphoma

Nivolumab and Ipilimumab in Treating Patients With HIV Associated Relapsed or Refractory Classical Hodgkin Lymphoma or Solid Tumors That Are Metastatic or Cannot Be Removed by Surgery

Modified Immune Cells (AFM13-NK) and A Monoclonal Antibody (AFM13) in Treating Patients With Recurrent or Refractory CD30 Positive Hodgkin or Non-Hodgkin Lymphomas

Pembrolizumab and Vorinostat in Patients With Relapsed or Refractory DLBCL, FCL or HL.

Brentuximab Vedotin and Nivolumab for the Treatment of Relapsed/Refractory Classic Hodgkin Lymphoma Previously Treated With Brentuximab Vedotin or Checkpoint Inhibitors

CC-486 and Nivolumab for the Treatment of Hodgkin Lymphoma Refractory to PD-1 Therapy or Relapsed

Testing the Addition of an Experimental Medication MK-3475 (Pembrolizumab) to Usual Anti-Retroviral Medications in Patients With HIV and Cancer

A Trial Comparing Chemotherapy Versus Novel Immune Checkpoint Inhibitor (Pembrolizumab) Plus Chemotherapy in Treating Relapsed/Refractory Classical Hodgkin Lymphoma

GLS-010 Monotherapy Versus Chemotherapy in Patients With Relapsed or Refractory Classical Hodgkin's Lymphoma (R/R cHL)

Combination Chemotherapy With or Without Bortezomib in Treating Patients With Classical Hodgkin Lymphoma That Has Returned or Does Not Respond to Prior Treatment.