Therefore, to mitigate the effects of these confounders and to reveal the impacts of CIH on ANGPTL4 levels, we strictly matched for age, BMI, and particularly their lipid profile (HDL-C, LDL-C, TC, TG, APOA, and APOB) in different OSA subgroups. Here, ANGPTL4 is linked to obstructive sleep apnea syndrome.