Ang et al. found that patients with TB-associated uveitis showed higher levels of IL-6, IL-8, CXCL9 and IP10, and was significantly different from idiopathic uveitis and controls [46] whilst Abu El-Asra found a significant positive association with TAU and IFN-γ, IL-8, MIG and IP-10 suggesting an autoimmune disease rather than an active TB infection. Here, CXCL9 is linked to tuberculosis.