ArrayExpress – functional genomics data

ArrayExpress Archive of Functional Genomics Data stores data from high-throughput functional genomics experiments, and provides these data for reuse to the research community.

Latest News

30 October 2018 - A New and Improved Annotare has been released!
Recently, we released a new version of Annotare designed to simplify and speed up the submission process by introducing several novel submission templates including a dedicated template for single-cell sequencing experiments. The templates pre-populate your submission with required sample attribute categories thus making it easier for submitters to know what type of information they need to provide with each experiment and sample type. By using the Annotare templates you will reduce the likelihood of being asked for additional metadata by our curation team and thus help us to process your submission more quickly.
You can find more details about the updated Annotare and the new templates here.
We’re always looking to improve our service and very much appreciate any feedback from our users – please let us know what you think about the new Annotare and how we can further improve it to make the submission process as smooth as possible. Contact us at


Information about how to search ArrayExpress, understand search results, how to submit data and FAQ can be found in our Help section.

Find out more about the Functional Genomics group.

Tools and Access

Annotare: web-based submission tool for ArrayExpress.

ArrayExpress Bioconductor package: an R package to access ArrayExpress and build data structures.

Programmatic access: query and download data using web services or JSON.

FTP access: data can be downloaded directly from our FTP site.

Related Projects

Discover up and down regulated genes in numerous experimental conditions in the Expression Atlas.

Explore the Experimental Factor Ontology used to support queries and annotation of ArrayExpress data.