MIR4439: MIR4439 is a microRNA that has been identified in several studies as having a potential role in cancer initiation and progression. In a study on hepatocellular carcinoma (HCC), four promoter hypomethylations, including MIR4439, were found to be associated with HCC patient survival [PMC5428754]. However, further analysis showed that MIR4439 promoter methylation was not an independent prognostic variable [PMC5428754]. MIR4439 expression was found to be differentially expressed during pregnancy, with a drop in expression during mid-gestation and a gradual increase until birth [PMC8645989]. In addition to its role in cancer and pregnancy, MIR4439 is also highly expressed in various human tissues and cell types [PMC8645989]. Overall, MIR4439 is a microRNA that has been implicated in cancer progression and survival outcomes in HCC patients. It also exhibits differential expression during pregnancy and is highly expressed across different human tissues.