Similarly, among the 41 participants with a positive QFT-Plus result, no significant differences in the median production of IFN-gamma between Tube TB.1 [median 6.12 IU/mL (IQR, 2.68–9.01)] and Tube TB.2 [median 6.14 IU/mL (IQR, 3.82–9.92)] were found. This evidence concerns the gene IFNG and tuberculosis.