OCA2 and cutaneous mastocytosis: Six patients carried pathogenic variants in genes known to be associated with CM, including MITF (c.952G>A p.(E318K)), OCA2 (c.1327G>A p.(V443I)), SLC45A2 (c.606G>C p.(W202C), c.834C>G p.(T278*)) and TYR (c.626C>T p.(P209L), c.1118C>A p.(T373K)) (Bertolotto et al. 2011; Nathan et al. 2019; Yokoyama et al. 2011) (Table 2, Table S2).