Moreover, as in the in-house QFN condition, IFN-γ levels in the in-house + A tube were higher in active TB patients (median [IQR] = 5.82 IU/ml [1.55–10.00]) and LTBI individuals (median [IQR] = 5.41 IU/ml [1.57–10.00]) than in healthy controls (median [IQR] = 0.02 IU/ml [0.01–0.08]) (p < 0.0001) (Fig. 2C). This evidence concerns the gene IFNG and tuberculosis.