IP10 concentrations of children with confirmed TB (N = 22, median IP10 7774 pg/ml) and contacts with TST+ and/or INFγ+ (N = 148, median IP10 12490 pg/ml) where compared against controls with TST− and INFγ− (N = 86, median IP10 704 pg/ml) to construct the ROC curves, as shown in Figure 5. The gene discussed is CXCL10; the disease is tuberculosis.