The rs30187 (C/T) and rs27524 (G/A) polymorphisms of ERAP1 were found to be associated with increased risk of psoriasis in a Chinese cohort.14A recent meta-analysis showed rs27524 and rs30187 polymorphisms and susceptibility to psoriasis, while lack of association was obtained for rs26653 and rs27044 polymorphisms.15 The gene discussed is ERAP1; the disease is psoriasis.