IFIH1 and type 1 diabetes mellitus: Moreover, genotypes C/T and T/T at the IFIH1 locus (rs1990760) were significantly more frequent in patients with T1D than in controls (P = 0.011, OR = 3.13, 95%CI = 1.29–8.00 and P = 0.008, OR = 3.36, 95%CI = 1.36–8.73 respectively, the power of the test 0.918, estimated effect size w was equal to 0.240, with the total sample size n = 303) (Figure 5).