IFNγ responses to TB antigens measured by Luminex correlated strongly with IFNγ measured in the QFN assay (Pearson's correlation coefficient, r = 0.83, p = <0.0001) and so, as expected, IFNγ responses to the TB antigens measured by Luminex were higher in the HHCs with LTBI compared to those without LTBI (p = <0.0001) (Figure 2). The gene discussed is IFNG; the disease is tuberculosis.