On the other hand, a proteomic analysis for OHSS in PCOS patients suggested that lipoprotein lipase, a protein which catalyses the hydrolysis of the triacylglycerol component of circulating chylomicrons and very low-density lipoproteins to provide non-esterified fatty acids and 2-monoacylglycerol for tissue utilization (23, 41), can be served as a predictive marker of OHSS in PCOS patients. This evidence concerns the gene LPL and polycystic ovary syndrome.