CXCL2 and tuberculosis: As shown in Fig. 5B, CCL1 with cut-off value of 20.99 pg/ml, CXCL10 cut-off value of 28.48 pg/ml and CXCL2 cut-off value of 85.27 pg/ml were classified by the CART model which determined that the model was able to discriminate samples with the AUC 0.920, sensitivity 92%, specificity 95% in unconfirmed TB vs unlikely TB.