In contrast, some combinations of the T polymorphic allele for the IFNG +874A/T variation appeared to protect against TB when compared to the LTBI group, especially the combinations TGCA (p = 0.0103; OR = 0.396; 95% CI 0.20–0.77), TGCG (p = 0.0352; OR = 0.344; 95% CI 0.14–0.86), TGTG (OR = 0.357; 95% CI 0.16–0.78), and TCTA (p = 0.0157; OR = 0.266; 95% CI 0.09–0.80). Here, IFNG is linked to tuberculosis.