Durability of response to belumosudil by dose. (A) Kaplan-Meier plot of DOR in the responder population. DOR was defined as the time from response until documented progression or start of another cGVHD systemic treatment; durability data continue to mature. (B) Kaplan-Meier curves of estimated FFS in the mITT population, including reasons for failure. FFS was defined as the absence of cGVHD treatment change, NRM, and recurrent malignancy. (C) Kaplan-Meier curves of estimated OS in the mITT population.