This is a single-arm, single-center, phase II clinical trial involving 37 pts (treatment-naive or refractory to standard therapy excluding Kit inhibitors and anti-PD-1/L1) with advanced melanoma harboring CKA….The ORR was 58.8% (95% CI: 32.7-84.9%) and DCR was 82.4% (95% CI: 56.6-96.2%). The mPFS was not reached (NR)....Imatinib mesylate/toripalimab combo was effective and well-tolerated in pts with advanced melanoma harboring c-kit aberrations.