IL6 and obstructive sleep apnea syndrome: On comparing patients with mild OSA and moderate-to-severe OSA, we found that TNF-α, IL-6, and IL-17A were also slightly greater in the moderate-to-severe OSA patients than in the mild OSA patients, yet the difference was not statistically significant (p-values = 0.716, 0.404, and 0.673, respectively).