NPC2 and tuberculosis: In the present work, we performed an extensive evaluation of NPC2, EPHA4, and DOCK9 mRNA levels (i) as diagnostic biomarkers according to WHO TPP criteria for a community-based triage or referral test to identify people suspected of having TB, (ii) as potential biomarkers for predicting progression from latent TB infection to active disease [19], and (iii) as correlates of a clinical response to anti-TB treatment.