Serum TNF-α was found to be significantly higher in those with psoriasis than those without (Arican et al., 2005; Takahashi et al., 2010; Kyriakou et al., 2014; Ovcina-Kurtovic and Kasumagic-Halilovic, 2022); however, majority of these studies report that its correlation with PASI scores was not significant. Here, TNF is linked to psoriasis.