2026 Europe Symposium

The 2026 OHDSI Europe Symposium welcomed a record number of both participants and collaborator showcase submissions to Rotterdam, where the weekend theme was ‘Continuous Collaboration for Living Evidence Generation’. Following two days of tutorials and workshops, the community joined together April 20 on the SS Rotterdam for a day of networking, sharing research, and looking ahead to the potential of a global healthcare surveillance system developed by the OHDSI community.

All presentations are listed below. Research from the collaborator showcase will be posted when available.

This video highlights the opening session, which includes:

0:00 – Welcome to OHDSI Europe (Renske Los and Aniek Markus, Erasmus MC)
10:50 – Journey of OHDSI (Peter Rijnbeek, Erasmus MC)

This video highlights the second session, which includes: 0:00 – Collaborator Showcase introduction (Egill Fridgeirsson, Erasmus MC)
1:25 – Extending FastOMOP to the OHDSI Application Layer (Niko Moeller-Grell, King’s College London, UK)
7:00 – An Iterative Annotation Pipeline for Building Clinical Datasets and Training Information Extraction Models: The PREPARE Project (Erik Calcina, Jožef Stefan Institute, Slovenia)
15:30 – Completeness and characteristics of breastfeeding data in SIDIAP (Laura Granés, IDIAPJGol, Spain)
21:05 – Validation of OMOP-Based Secondary Healthcare Resource Use and Cost Estimates for Federated Health Economics Analyses in the UK (Gianluca Fabiano, University of Oxford, UK)
26:35 – Genetic Validation of Evidence-Based Phenotype Refinement in EHR Data (Mary Pat Reeves, FinnGen, University of Helsinki, Finland)
33:15 – Insights on Developing a Federated Machine Learning Prediction Model on Danish and Norwegian Colorectal Cancer Data (Samuel Wiqvist, Zealand University Hospital, Denmark)
38:40 – DARWIN EU® – Clozapine and the incidence of agranulocytosis over time (Dina Vojinovic, IQVIA, The Netherlands)
44:50 – Real-World Evidence on SGLT2 inhibitor utilization across cardiorenal phenotypes in Belgium: a federated OMOP-CDM and NLP-enabled hospital network study (Bart Verheyden, AstraZeneca BeLux, Belgium)

This video highlights the third session, which featured a conversation titled “Dreaming About The OHDSI Journey Ahead” and featured Patrick Ryan (Johnson & Johnson) and Renske Los (Erasmus MC).

This video highlights the fourth session, which featured a trio of Titan Award honorees highlighting their work in the community.

0:00 – From Dreams to Reality: The Journeys of 3 Titan Award Winners
3:10 – Maxim Moinat, Department of Medical Informatics, Erasmus MC
18:40 – Anthony Sena, Global Epidemiology, Johnson & Johnson & Department of Medical Informatics, Erasmus MC
33:00 – Polina Talapova, SciForce & Tufts Medical Center

This video highlights the fifth session, which includes:

0:00 – Introduction to Propositions for Collaboration from the National Nodes
3:25 – Ines Reinecke, OHDSI Germany
9:40 – Aedin Culhane, OHDSI Ireland

This video highlights the sixth session, which features The OH!-Factor. Moderated by Ilse Vermeulen (Department of Medical Informatics, Erasmus MC ), four OHDSI OG’s (Martijn Schuemie, Miguel-Angel Mayer, Sarah Seager, Renske Los) take the stage for a secret mission.

This video highlights the seventh session, which features the symposium closing, led by Peter Rijnbeek.

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