These results were recently validated in 168 Russian Psoriasis patients receiving CsA for 3 months, further unveiling two associated loci (rs1128503, rs2032582) mapped at the ABCB1 gene [57]; haplotype analyses from both studies documented that the T-G-C (rs1045642-rs2032582-rs1128503) haplotype frequency was significantly higher in the non-responders group, implying its utilization as a predictive biomarker. Here, ABCB1 is linked to psoriasis.