HIF1A and hepatocellular carcinoma: Apart from these, extracellular Adenosine triphosphate (ATP) hydrolyzation to 5′‐AMP affected through ectonucleoside triphosphate diphosphate hydrolase (ENTPD), an important transcriptional target of HIF‐1, and promotes the accumulation of MDSCs in hepatocellular carcinoma (HCC) model [73].