ITLN1 and obstructive sleep apnea syndrome: It was reported that decreased circulating omentin-1 levels could be regarded as an independent predictive marker for the obstructive sleep apnea syndrome and that omentin protects against pulmonary arterial hypertension through inhibiting vascular structure remodeling and abnormal contractile reactivity.32, 33, 34 However, to our knowledge, no study has assessed the impact of omentin on ARDS.