IL6 and tuberculosis: TB-IRIS is associated with increased levels of several cytokines, particularly IL-6, TNF-α and IFN-γ (Tadokera et al., 2011; Conesa-Botella et al., 2012; Lai et al., 2015; Ravimohan et al., 2015) and inflammasome activation (Lai et al., 2015).