About a decade ago, at the beginning of his career in academic medicine, Brian Engelhardt, MD, MSCI, noticed that many of his patients receiving a stem cell transplant for their blood cancer ended up with diabetes.
Extracorporeal photopheresis (ECP) is used to treat chronic graft-versus-host disease (cGVHD) — a complication of bone marrow or stem cell transplant that occurs when donor cells attack the recipient. How ECP works is unclear, and standardized treatment guidelines have not been established.
