Search Variants in ClinGen Allele Registry

Type of search

For example: Select type of search to load examples.

Do not have transcript/HGVS expression?

Please use this service to identify allele interactively if HGVS expression or transcript is not available.

Query with Gene and variation

Bulk query

This option provides a search box for entering multiple HGVS expressions (one per line). For alleles present in the allele registry, the search returns canonical allele identifiers. For valid alleles not present in the allele registry, the search results provide a button to register an allele.

Bulk Query

Create Login

Login is required to register new alleles and obtain their canonical identifiers. To create a login please send an email request to with First name, Last name, email address, affiliation (Optional) and preferred login name. A more direct online registration process without e-mail will be available soon.

What is ClinGen Allele Registry?

The allele registry provides and maintain identifiers for variations.

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API specifications

Allele registry supports querying/registration using well documented APIs.

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Reference sequence accessions for chromosomes

Mapping of human chromosomes to reference sequence accession.

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Contact Us

Please feel free to contact us at for any questions or feedback.