In the patients with active TB, levels of IP-10 were found to be significantly increased in the TB specific antigen stimulated samples (median 9544 pg/ml, range: 2535–40,000 pg/ml) as compared to the unstimulated or background samples (median 1019 pg/ml, 433–4308 pg/ml; p<0.0003) (Figure 1a). Here, CXCL10 is linked to tuberculosis.