Overview Avelumab With Radiotherapy in Patients With Leptomeningeal Disease Status: Recruiting Trial end date: 2023-03-01 Target enrollment: Participant gender: Summary This study is to find a safe dose of the combination of Avelumab and Whole Brain Radiotherapy (WBRT) in patients with Leptomeningeal Disease. Phase: Phase 1 Details Lead Sponsor: H. Lee Moffitt Cancer Center and Research InstituteCollaborator: PfizerTreatments: Antibodies, MonoclonalAvelumab