GWAS indicated that the HCP5 SNV rs2395029 was a potential marker for abacavir-induced hypersensitivity, a marker for HLA-B*57:01 in populations of mainly Caucasian or Hispanic descent, as well as flucloxacillin drug liver injury, HIV control, and psoriasis and psoriatic arthritis (Table 3). The gene discussed is HLA-B; the disease is psoriatic arthritis.