Welcome to YM500v3, A smRNA-Seq Database for Cancer Research.

YM500 is a database that contains more than 11,000 cancer-related smRNA and 10,000 RNA-seq datasets, as well as including eight functions as shown below. The previous version of this database focused only on miRNAs. For the updated version of the database, YM500v3, we also examined other functional sncRNAs in smRNA-seq datasets and provide two main new sections, ‘Survival’ and ‘Cancer’. Moreover, the ‘Survival' and ‘Meta-analysis' sections provide functions to help investigators define specific sample groups according to dozens of clinical characteristics. The information of sncRNA IDs and the corresponding sequences is described in the "Documentation."

Expression Survival Cancer isomiRs





Novel miRNA arm switching meta-analysis Result & Download



Chung IF., et al, (2017) "YM500v3: a database for small RNA sequencing in human cancer research."
Nucleic Acids Res 45(Database issue): D925-931.

Cheng, W. C., et al. (2015). "YM500v2: a small RNA sequencing (smRNA-seq) database for human cancer miRNome research."
Nucleic Acids Res 43(Database issue): D862-867.

Cheng, W. C., et al. (2013). "YM500: a small RNA sequencing (smRNA-seq) database for microRNA research."
Nucleic Acids Res 41(Database issue): D285-294.