Phase 1 Study of Tremelimumab, Durvalumab, High-dose Chemotherapy, + Autologous Stem Cell Transplant

This was a Phase 1, open-label, multicenter, study of checkpoint inhibitor therapy (tremelimumab ± durvalumab) prior to and following autologous stem cell transplant (ASCT) and high-dose melphalan in subjects with multiple myeloma who were at a high risk for relapse, were eligible for ASCT, and had available cryopreserved stem cells. Primary study objectives were to determine the safety and tolerability of study treatment. Further objectives were to evaluate the clinical efficacy and biologic activity of the regimen.