According to a recent meta-analysis by Sookoian and Piorola, there were 404 control subjects and 668 OSA patients in 11 studies, consistently using a non-invasive surrogate of MASLD; they showed that OSA was linked to a significant increase in liver enzymes, specifically alanine transaminase (ALT), indicating that OSA is linked to liver deterioration regardless of BMI and diabetic status [87]. Here, GPT is linked to obstructive sleep apnea syndrome.