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

11 February 2019 - ArrayExpress - update paper published!
A new publication describing the development and future plans for the ArrayExpress archive and database service has recently been published in Nucleic Acids Research: ArrayExpress update - from bulk to single-cell expression data.
Read it to discover the breadth of the data contained within the archive and how it has developed over the years to reflect the latest technologies in functional genomics, in particular, single cell sequencing, and to learn about the improved functionalities of its linked submission tool, Annotare.
Please cite this paper in your publications when referencing ArrayExpress.


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.