Prolonged Remission by Pembrolizumab and Brentuximab-Vedotin Combination Therapy in Heavily-Pretreated Relapsed/Refractory Hodgkin's Lymphoma.

Hodgkin's lymphoma (HL) is usually sensitive and curative to multi-agent chemotherapy, but may become refractory disease in a subset of relapsed patients. Recent novel agents, brentuximab-vedotin (BV) and immune checkpoint inhibitors have significantly improve the treatment outcome. We report the outcome by combination of BV with pembrolizumab in a patient with a relapsed/refractory HL in a remarkable and durable response, even previously failed to multiple lines of chemotherapy, or brentuximab-vedotin/pembrolizumab monotherapy. Further investigation of immunotherapy combination in relapsed/refractory HL is needed.