According to the results of a study by Ya-ling Liang and co-authors, the STAT4 rs7574865 SNP is not only associated with RA, SS, and SLE but also slightly associated with the risk of type 1 diabetes, juvenile idiopathic arthritis (JIA), and ulcerative colitis (UC) [27]. Here, STAT4 is linked to type 1 diabetes mellitus.