Of note, SLC17A9, mapped by a DMR unique to the at-birth analyses of infants of the higher latitude subgroup born in winter (Additional file 6: Table S5), is associated with a skin-specific autoinflammatory disease, disseminated superficial actinic porokeratosis (DSAP) [60]. This evidence concerns the gene SLC17A9 and porokeratosis 3, disseminated superficial actinic type.