There was no difference between the IP-10 and IFNγ stimulation indices in the control groups, but IFN-γ has a significantly higher stimulation index than IP-10 in both the active TB (median SI IFNγ: 112.5, range: 1–2131: median SI IP-10: 9.4, range: 1–125; p<0.0013) and latent TB groups (median SI IFNγ: 271, range: 1.5–16331, median SI IP-10: 8.8, range: 0.32–68.7; p<0.0017). The gene discussed is IFNG; the disease is tuberculosis.