TLR9 and tuberculosis: We found a significant increase in the frequency of the allele A of the TLR9 gene polymorphism rs352139 (A>G) in the group of TB patients (gene frequency (g.f.)= 0.522) when compared to controls (g.f. = 0.383, Pcorr = 0.01, OR = 1.75, 95% CI = 1.15-2.67).