In the non‐CSD category of CM, Spitz melanomas are characterized by driver fusion genes including the kinase domains of ALK, ROS1, NTRK1, NTRK3, MET, RET, BRAF and MAP3K8, while Acral melanomas display a high incidence of copynumber variation with gene amplifications of CCND1 and KIT.38 This evidence concerns the gene KIT and cutaneous mastocytosis.