XPNPEP1 and tuberculosis: On the other hand, the expression of lncRNAs lnc-XPNPEP1-5, lnc-CASKIN2-2, lnc-HSPA13-6, lnc-CLIC5-1, and LINC02502 was significantly reduced in both the latent infection group and the TB patient group compared to the uninfected HC group (all P-values < 0.05).