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Introduction to NCBI Bioinformatics Resources: dbVar

A concise introduction to the various bioinformatic data available from NCBI.



dbVar is NCBI's database of genomic structural variation – it contains insertions, deletions, duplications, inversions, multinucleotide substitutions, mobile element insertions, translocations, and complex chromosomal rearrangements. (from the NCBI web site)

NCBI provides an FAQ on dbVAR at

This guide will show a sample variation viewer using the LCT gene as the source.

First change the database search to dbVar and create a search for the gene we are interested in and limit to the organism:


The resulting page shows larger scale variations for this this gene.   Choosing one, nsv1123397, click on the link to view this variation in more detail: