IL6 and post-traumatic stress disorder: In human studies, levels of inflammatory cytokines (IL-6, TNFα, 1L-1β) have been correlated to the severity of mTBI consequences and PTSD in some patients (Spivak et al., 1997; Baker et al., 2001; Gola et al., 2013; Woodcock and Morganti-Kossmann, 2013).