Clinical Trial Information Phase I Trial of Methotrexate, Rituximab, Lenalidomide, and Nivolumab (Nivo-MR2) Induction Followed by Lenalidomide and Nivolumab Maintenance in Primary CNS Lymphoma Protocol Number: A051901 Status: Open Age Group: Adult Treatment Type: Treatment Phase: I NCT ID: NCT04609046 Scope Information Scope: National Disease Site(s): Non-Hodgkin Lymphoma