Interestingly, we observed a similar trend in expression of TLR9, with IOTB (1.55 ± 0.93) showing significantly lower mRNA levels of the receptor as compared to non-TB uveitis (268.5 ± 155.5) (p = 0.01) but not non-uveitis subjects (6.06 ± 3.4) (p = 0.2) (Fig. 1b). This evidence concerns the gene TLR9 and tuberculosis.