NPC2 and tuberculosis: Even though all subjects had respiratory symptoms, those diagnosed with TB by positive sputum smear and/or sputum liquid culture and/or GeneXpert TB/RIF test showed significant differences in DOCK9 (p-value = 0.0002), EPHA4 (p < 0.0001), and NPC2 (p < 0.0001) mRNA expression when compared with non-TB subjects, as defined by negative results by the aforementioned diagnostic tests (Figure 2).