TYK2 and autoimmune disease: Therefore, different SNPs in the TYK2 gene seemto be associated with autoimmune diseases, although the results on individual SNPsare still inconclusive (Tao et al.,2011; Lee et al.,2012; Ellinghaus et al.,2016; Lee and Bae, 2016; Westra et al., 2018; Yin et al., 2018) especiallydue to the increase in the number of studies in this field in the last few years indifferent ethnicities.