A Phase 2, Open-label, Multicenter Study to Evaluate the Safety, Tolerability, PK, and Efficacy of Vimseltinib in Adults With Active Chronic GVHD After Failure of Prior Systemic Therapy

Inclusion Criteria: 1. Must be allogeneic hematopoietic stem cell transplant (HSCT) recipients with moderate to severe cGVHD requiring systemic immune suppression. a. May have persistent active acute GVHD (aGVHD) and chronic GVHD (cGVHD) manifestations (overlap syndrome). 2. Participants with active cGVHD who have received and failed at least 2 prior lines of systemic therapy. 3. Stable dose of systemic corticosteroids is permitted but not required. If being taken, participants should be on a stable dose of corticosteroids for at least 2 weeks prior to starting study drug treatment. 4. Ad…