Nevertheless, only two polymorphisms, rs6920220 and rs610604 TNFAIP3, have been investigated in psoriasis patients treated with UTK and anti-TNFs, with inconsistent outcomes Types TNF binds to two types of receptors: TNFR1-TNF receptor type 1 (CD120a; p55/60) and TNFR2-TNF receptor type 2 (CD120b; p75/80). This evidence concerns the gene TNF and psoriasis.