Blood filtering therapy aimed at soothing immunotherapy side effects

This study tested a treatment called extracorporeal photopheresis (ECP) for people with melanoma or lung cancer who developed severe colitis (gut inflammation) from immunotherapy and didn't get better with steroids. ECP involves taking blood, treating white blood cells with a light-activated drug and UV light, then returning them to the body. The goal was to see if ECP could calm the colitis better than standard care. However, the study was withdrawn before enrolling any participants.