IL6 and tuberculosis: However, if in the cohort of HIV-positive patients, the level of IL-6 gradually decreased in the process of receiving ART and became comparable with the control group, which is consistent with the data obtained by Osuji et al. [4] and Haissman et al. [100], in this study, in patients with HIV/TB co-infection, even after 6 months of therapy, IL-6 expression remained at the same high level as before ART.