12세 이상의 만성 이식편대숙주병 환자를 대상으로 한 벨루모수딜의 안전성 조사

This is an interventional phase IV clinical study which is single-arm study for assessing the safety of belumosudil in Indian patients who are12 years and older. Study details include: * The study duration will be up to 12 months per participant. * The treatment duration will be up to 24 weeks. * The number of visits will be 7.