Finally, multivariable poisson regression analysis indicated that OAS1, IFIT1, IFIT3, OASL and IFI44 were included in the equation (all of P < 0.01), whereas adjusted risk ratios (RRs) of OAS1, IFIT1 and IFIT3 were 1.36 (95% CI 1.01–1.83; P = 0.04), 3.10 (95% confidence interval (CI) 1.32–8.03; P = 0.02) and 1.32 (95% CI 1.01–1.72; P = 0.045), respectively, in discriminating TB from the HC group (Fig. 6C). The gene discussed is IFIT3; the disease is tuberculosis.