IFNG and tuberculosis: The performance comparison of the novel T-Track® TB molecular assay, measuring IFNG and CXCL10 mRNA levels in whole blood stimulated with Mtb-specific ESAT-6 and CFP-10 proteins, with an existing ELISA-based IGRA (QFT-Plus), demonstrated the suitability of T-Track® TB to accurately discriminate active TB patients from non-TB controls.