IL6 and tuberculosis: Rv3425 (PPE57), which locates in the RD11 region and induces macrophage activation by augmenting the expression of MHC-II and pro-inflammatory cytokines (TNF-α, IL-6, and IL-12p40), has been confirmed with the potential to distinguish patients with active TB via QFT assay (Wang et al., 2013; Losi et al., 2016) and for use as an antigen for therapeutic or protective vaccine design (Xu et al., 2014; Yang et al., 2015).