FDA approves Jakafi for the treatment of steroid-refractory acute graft versus host disease.

Incyte Corporation has announced that the FDA has approved Jakafi (ruxolitinib) for the treatment of steroid-refractory acute GVHD in adult and pediatric patients 12 years and older. Jakafi is the first and only FDA-approved treatment for this indication.

The approval was based on data from REACH1, an open-label, single-arm, multicenter study of Jakafi in combination with corticosteroids in patients with steroid-refractory grade II-IV acute GVHD. Of the 71 patients recruited into REACH1, 49 patients were refractory to steroids alone, 12 patients had received two or more prior anti-GVHD therapies and 10 patients did not otherwise meet the FDA definition of steroid-refractory. Jakafi was administered at 5 mg twice daily, and the dose could be increased to 10 mg twice daily after three days in the absence of toxicity. The efficacy of Jakafi was evaluated based upon Day 28 overall response rate (ORR), defined as a complete response (CR), very good partial response or partial response based on the Center for International Blood and Marrow Transplant Research (CIBMTR) criteria. The Day 28 ORR in the 49 patients refractory to steroids alone was 57 percent with a CR rate of 31 percent. The most frequently reported adverse reactions among all 71 study participants were infections (55 percent) and edema (51 percent), and the most common laboratory abnormalities were anemia (75 percent), thrombocytopenia (75 percent) and neutropenia (58 percent).