IL33 and obstructive sleep apnea syndrome: Also, highest concentrations of IL-6 (27 pg/mL), IL-17A (50 pg/mL) and IL-33 (40 pg/mL) were detected in 80% of patients of G3 (OSA), followed by G4 (P-OSA): IL-6 (27 pg/mL), IL-17A (49 pg/mL) and IL-33 (38 pg/mL).