IL6 and oculopharyngeal muscular dystrophy: A meta-analysis with twenty-three studies showed that salivary levels of IL-8, IL-6, TNF-α, IL-1β and IL-1α are significantly higher in OC patients compared to healthy controls; the levels of salivary IL-8 and IL-6 are higher in OC patients compared to OPMD, and comparing the controls vs OPMD patients, it was observed a significant increase in salivary levels of IL-6 in OPMD group.