Table 1.

Overview of described databases.

Name	Use	URL
miRBase	Database for miRNA sequences and gene annotations	http://www.mirbase.org/
miRNASNP	Database for miRNA gene variants, location annotation, RNA secondary structure impact prediction, target impact prediction for seed variants	http://bioinfo.life.hust.edu.cn/miRNASNP2/index.php
miRNA SNiPer	Database for miRNA gene variants, location annotation	http://www.integratomics-time.com/miRNA-SNiPer/
miRvar	Database for miRNA gene variants, location annotation, predicted impact on Dicer and RISC loading	http://genome.igib.res.in/mirlovd/home.php
PolymiRTS Database	Database with miRNA seed variants and predicted effect on targeting	http://compbio.uthsc.edu/miRSNP/
dPORE-miRNA	Database with miRNA promoter variants and their predicted effect on transcription binding	http://cbrc.kaust.edu.sa/dpore/

The Use column refers to the usage described in the text. Most of the databases also incorporate other information not mentioned here.