Post‑transplant Cyclophosphamide with Sirolimus/Cyclosporine Dramatically Lowers Chronic GVHD After Unrelated Donor PBSC Transplant Without Raising Relapse Risk

Post‑transplant Cyclophosphamide with Sirolimus/Cyclosporine Dramatically Lowers Chronic GVHD After Unrelated Donor PBSC Transplant Without Raising Relapse Risk

In a randomized Phase II trial, replacing MMF with post‑transplant cyclophosphamide (PTCy) alongside sirolimus and cyclosporine in unrelated donor PBSC transplants markedly lowered chronic GVHD and improved 1‑year chronic GVHD‑free relapse‑free survival, without increasing relapse or early mortality, though severe infections rose.