VDR and mycosis fungoides: To date, among the different cutaneous malignancies, MF has been the least studied in relation to vitamin D. There is reported evidence on the VDR single nucleotide polymorphisms (SNPs) that points out four SNPs with possible disease association; three at the 3' end of the VDR gene (TaqI, BsmI, ApaI) and one at the 5’ end (FokI) [12].