RecruitingPhase 2Drug trialBrentuximab Vedotin in Treating Patients With CD30+ Malignant Mesothelioma That Cannot Be Removed by SurgeryThis phase II trial studies how well brentuximab vedotin works in treating patients with CD30 positive (+) malignant mesothelioma that cannot be removed by surgery. Monoclonal antibodies, such as brentuximab vedotin, may interfere with the ability of tumor cells to grow and spread.