hsa-mir-520d: Hsa-mir-520d is a microRNA (miRNA) that has been studied in various contexts. It has been mentioned in several studies as one of the miRNAs that have not been verified [PMC9483142]. In one study, hsa-mir-520d was found to be upregulated more than 8-fold in CP tissue compared to healthy gingiva [PMC7606899]. It is a member of the miRNA family of hsa-mir-520b, along with hsa-mir-520c and hsa-mir-520a, which were confirmed by dbDEMC [PMC6295065]. Hsa-mir-520d belongs to the "miR-302-3p/372-3p/373" and "miR-520" families [PMC5584237]. Another study reported upregulation of hsa-mir-520d with more than eight-fold difference compared to healthy gingival tissues [PMC6170608]. Hsa-miR-1228 and hsa-mir-520d were identified as the best reference genes for normalizing miRNA analysis in colorectal adenocarcinoma samples [PMC7112021]. Hsa-miR-1228 and hsa-mir-520d have also been identified as suitable reference genes for normalizing miRNAs from plasma, exosome, and tissue obtained from colorectal cancer patients [PMC6367481]. Overall, hsa-mir-520d is a miRNA that has shown differential expression in various conditions and has been identified as a potential reference gene for normalizing miRNA analysis. Further research is needed to fully understand its role and significance in different biological processes. References: [PMC9483142] [PMC7606899] [PMC6295065] [PMC5584237] [PMC6170608] [PMC7112021] [PMC6367481]