Welcome to isomiRdb
A miRNA expression database with isoform resolution
isomiRdb stores miRNA and isomiR expression values for 42499 miRNA-seq samples collected from miRMaster, The Cancer Genome Atlas and Sequence Read Archive and uniformly processed from raw reads using sRNAbench . We cover over 70,000 different miRNA isoforms derived from miRBase (release 22.1) annotations.
Querying isomiRdb
isomiRdb can be queried in two three ways: sample query, miRNA query and isomiR query. Metadata from multiple sources has been gathered for all samples to allow specific querying using tissue, cell-line or cancer type.
Different visualisations are available for each type of query.
![Card image cap](/isomirdb/static/img/samples_example.png)
Sample query
Top miRNAs from each tissue hosted in the database can be queried and the resulting values can be downloaded.
Query samples![Card image cap](/isomirdb/static/img/miRNA_example.png)
miRNA query
Individual miRNAs can be queried and visualized. The corresponding isomiR sequences and values are also displayed.
Query miRNAs![Card image cap](/isomirdb/static/img/isomiR_example.png)
Query isomiRs
Over 3 million different isomiRs can be queried and visualized. If they didn't reach 1 RPM in at least 1% of the samples, no expression data is provided.
isomiR query