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I have a list of old Ensembl IDs from a previous release. How can I find their IDs in the current version?

The gene IDs might be the same in the current version. Search for the gene ID in the browser, or in BioMart. A gene ID can change if the gene structure changes dramatically, for example if a gene is split into two, or alternatively, two genes are merged into one.

If you have a list of IDs, submit them to our ID History converter. Click on the 'Tools' link at the top of most Ensembl pages, and follow the link to the converter.

Or, view our older, archive sites.

If you have any other questions about Ensembl, please do not hesitate to contact our HelpDesk. You may also like to subscribe to the developers' mailing list.