The lncRNAs distal-less homeobox 6 antisense 1 (DLX6-AS1), psoriasis-susceptibility-related RNA gene induced by stress (PRINS), family with sequence similarity 190, member A3 (FAM190A-3), aminoacylase-1 (ACY1), and Rho GTPase activating protein (ARHGAP) were selected as candidate genes for subsequent data analysis. This evidence concerns the gene PTGDR and psoriasis.