Collectively, this meta-analysis proved that IL-2 rs2069762, IL-4 rs2243250, IL-6 rs1800795, IL-8 rs4073, IL-10 rs1800871 and IL-10 rs1800896 polymorphisms may confer susceptibility to TB, especially for Asians.
Though no significant differences in the allelic and genotypic distributions of SNPs of these two genes were observed between control group and TB group, rs2243268-A and rs2243274-G of the IL-4 gene were associated with reduced risk of developing extrapulmonary tuberculosis (EPTB) (Prs2243268=0.005 and Prs2243274=0.004) and severe TB (Prs2243268=0.003 and Prs2243274=0.003).