gnomAD Database

Overview

The Genome Aggregation Database (gnomAD) is the largest publicly available collection of human genetic variation, aggregated from large-scale sequencing projects. gnomAD v4 contains exome sequences from 730,947 individuals and genome sequences from 76,215 individuals across diverse ancestries. The current release is v4.1.1 (30 March 2026), which updated gene constraint (Bayesian LOEUF, chrX/chrY coverage) and LOFTEE flags; the API dataset ID is still gnomad_r4. It provides population allele frequencies, variant consequence annotations, and gene-level constraint metrics that are essential for interpreting the clinical significance of genetic variants.

Key resources:

• gnomAD browser: https://gnomad.broadinstitute.org/
• GraphQL API: https://gnomad.broadinstitute.org/api
• Data downloads: https://gnomad.broadinstitute.org/downloads
• Documentation: https://gnomad.broadinstitute.org/help

When to Use This Skill

Use gnomAD when: