IL17RA and cutaneous mastocytosis: Notably, deficiency of the IL17RA, IL17RC, IL17F, or TRAF3IP2 genes is implicated in chronic mucocutaneous candidiasis disease (CMCD), which is characterized by recurrent or persistent infection affecting the nails, skin, and oral and genital mucosae caused by the Candida species, often C. albicans [96,111,112,113].