NAT2 and psoriasis: More specifically, studies amongst Han Chinese populations found no significant association between rs1799930 and AML susceptibility which partially concords with Dursun et al, who revealed that rs1799929, rs1799930, and rs1799931 polymorphisms of the NAT-2 gene are not risk factors for the development of psoriasis (Dursun et al., 2018; Zou et al., 2017).