Studies have shown that SNPs in PDCD1 are associated with a number of autoimmune diseases, including SLE (Fathi et al., 2020), RA (Kong et al., 2005), T1D (Qian et al., 2018), and ankylosing spondylitis (AS) (Liu et al., 2011). The gene discussed is PDCD1; the disease is rheumatoid arthritis.