ArrayExpress - functional genomics data

ArrayExpress is a database of functional genomics experiments that can be queried and the data downloaded. It includes gene expression data from microarray and high throughput sequencing studies. Data is collected to MIAME and MINSEQE standards. Experiments are submitted directly to ArrayExpress or are imported from the NCBI GEO database.

Data Content

Updated today at 06:00
  • 55656 experiments
  • 1649790 assays
  • 27.07 TB of archived data

Latest News

31 October 2014 - Submissions to ArrayExpress now faster and easier with Annotare
With Annotare, most submitters prepare a submission successfully in under 3 hours and receive an accession number within 10-15 minutes after submission. You don't need to wait until your paper is accepted for publication to start your ArrayExpress submission, because all unpublished data sets can be kept private with a "release date" chosen by you. You can also change public release date at any time to suit the peer review process, and/or edit publication details when your paper is published. So, if you are preparing a manuscript which refers to functional genomics data, why not start submitting to ArrayExpress today? Annotare help is at hand to get you started. Happy submitting!


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

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.