EU-CAN Harmonize is an expert working group consisting of members of the EU-CAN consortia. The working group meets  every 4-6 weeks to discuss cross-cutting issues that are relevant to harmonization and data sharing. Usually one or two of the participating consortia present their current state of progress, followed by a discussion. The group started an archive with all the presentations of the last year. After the focus was on technical aspects of data harmonization, the group is currently discussing ‘federated analysis’ approaches. For more details, please contact: Thomas.jaenisch@uni-heidelberg.de