Weekly OHDSI Digest – April 27, 2026

WEEKLY COMMUNITY CALL MEETING

Please join us Tuesday, April 28 (11 am ET) for Week 4 of Phenotype Aphril, when

Azza Shoaibi will lead the community in a session of evaluating acute myocardial infarction phenotypes developed by the community.

We will also hear more 2026 Objectives and Key Results for a pair of OHDSI workgroups, and Harry Reyes Nieva will discuss the RAIIDIUS (Responsible AI for Infectious Disease Intervention, Understanding, and Surveillance) symposium, coming June 9 in New York City.

Reminder: The deadline to submit your brief report for the 2026 Global Symposium is June 5 at 8 pm ET. Learn more and find the abstract submission form.

Everybody is invited. If you didn’t receive a call invite, please use this link to join. The call schedule and previous recordings can be found on the community calls page.

WEEKLY WORKING GROUP MEETINGS

Upcoming Workgroup Calls – OHDSI

OHDSI SHOUTOUTS

Congratulations to the team of Fan Bu, Ruopeng Wu, Anna Ostropolets, Arya Aminorroaya, Hsin Yi Chen, Yi Chai, Lovedeep Singh Dhingra, Thomas Falconer, Jason C Hsu, Chungsoo Kim, Wallis C Y Lau, Kenneth Man, Evan Minty, Daniel Morales, Akihiko Nishimura, Phyllis Thangraraj, Mui Van Zandt, Can Yin, Rohan Khera, George Hripcsak, and Marc Suchard on the recent publication of Comparative Cardiovascular Effectiveness of Glucagon-Like Peptide 1 Receptor Agonists and Sodium-Glucose Cotransporter 2 Inhibitors in Diabetes Mellitus in JACC.

• Congratulations to the team of Saketh Amasa, Vedant Agrawal, Teerth Patel, Apurvakumar Patel, Mert Karabacak, Isabelle Germano, and Konstantinos Margetis on the recent publication of Health literacy, healthcare access, and self-perception of health among intracranial tumor patients: an analysis of the National Institute of Health (NIH) “All of Us” research program in the Journal of Clinical Neuroscience.

• Congratulations to the team of Hiren N Parekh, Paul N Manson, Daniel J Lewis, Salih Colakoglu, and Sashank K Reddy on the recent publication of Risk factors and exploratory clustering of complications after reconstruction following Mohs surgery: A national NIH All of Us study in the Journal of Plastic, Reconstructive and Aesthetic Surgery.

• Congratulations to the team of Peter J Leese, Tomas McIntee, Sydney E Browder, Mirjami Laivuori, Olamide Alabi, and Katharine L McGinigle on the recent publication of Extending the Observational Medical Outcomes Partnership Common Data Model to Support Observational Peripheral Vascular Disease Research in the Journal Surgical Research.

• Congratulations to the team of Sarah K Wooller, Andrew Blake, Martin McCabe, Colin McLean, Gareth Price, Harriet Unsworth, Mieke Van Hemelrijck, and Frances M G Pearl on the recent publication of From bench to byte: A UK perspective on data-driven cancer research in the European Journal of Cancer.

• Congratulations to the team of Sima Mohammadi, Cori Campbell, Miriam C J M Sturkenboom, and Tiago A Vaz on the recent publication of A Systematic Review to Summarize and Critically Appraise Existing Phenotype Libraries Using Electronic Health Records in Pharmacoepidemiology & Drug Safety.

OHDSI UPDATES

Registration and the call for participation are now open for the 2026 OHDSI Global Symposium, held Oct. 20–22 at the Hyatt Regency in New Brunswick, N.J. The deadline to submit your brief report(s) for the Collaborator Showcase is June 5 at 8 pm ET.

• 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 can be found here.

• The second OHDSI Maternal Health Fellowship is designed to train clinical investigators for improved maternal and neonatal care. This fellowship offers three key components: Career Development, Practice, and Networking. Supported by both the OHDSI community and the NIH IMPROVE initiative, the program focuses on training clinical investigators in observational research methods to enable them to conduct reproducible research and generate real-world evidence. Learn more and register hereThe deadline to apply is May 15.

• Ready to turn your data harmonization vision into reality? Join The OMOP School in Stockholm, Sweden May 26-29 for a hands-on bootcamp designed to help you master the OMOP Common Data Model and execute end-to-end mini-harmonization projects. Whether you are a data scientist, researcher, or health data custodian, this intensive workshop provides the actionable tools and OHDSI methods needed to transform your institutional research capabilities.

• The first OHDSI Latin America Symposium will be held July 30-31 in Salvador, Brazil. The event will include multiple workshops, including sessions focused on Introduction to OMOP, Cohort building, ETL for OMOP, and Scientific collaboration: opportunities for network studies in Latin America. Please help the organizing committee identify relevant stakeholders to represent the region; reach out to [email protected] or [email protected] to provide assistance.

• The OHDSI community has published more than 950 peer-review studies highlighting the OMOP CDM or OHDSI tools. Learn more about OHDSI research via our improved Community Dashboard. Thank you to our collaborators at Johns Hopkins for leading this initiative.

• Registration is now open for the 2026 Summer School in Observational Health Data Science & Informatics, AI, and Real World Evidence, which will be held June 22-26 at the Columbia University Department of Biomedical Informatics. Now in its second year, the Columbia OHDSI Summer School provides health professionals, researchers, and industry practitioners with an immersive, hands-on training to working with real-world health data and generating real-world evidence (RWE). Participants will explore the types of healthcare data captured during routine clinical care—such as electronic health records and administrative claims—and learn how to standardize these data using the OMOP Common Data Model to support collaborative, distributed research as part of a data network.

OHDSI SOCIAL SHOWCASE

• Research from the 2025 Global Symposium Collaborator Showcase is being shared daily on OHDSI’s LinkedInTwitter/X, Instagram and Bluesky social channels as part of the #OHDSISocialShowcase. Below are posters (with study leads) that are featured this week:

Monday — Progress and Challenges of the OHDSI Africa Chapter (Cynthia Sung)

Tuesday — Development of a multi-institutional kidney biopsy report registry via a natural language processing pipeline (Rodrigo Azuero-Dajud)

Wednesday — Evaluating the OHDSI Phenotype library concept sets using Large Language Models (Dmytro Dymshyts)

Thursday — Empowering Clinical Trial Design through AI: A Randomized Evaluation of PowerGPT (Yiwen Lu)

Friday — EHR Browser: A Web Tool to Explore OMOP-CDM Health Records by Concept Hierarchy, Mappings, and Temporal Trends (Veronica Lorenzini)

UPCOMING OHDSI EVENTS

The first OHDSI Latin America Symposium will be held July 30-31 in Salvador, Brazil. The event will include multiple workshops, including sessions focused on Introduction to OMOP, Cohort building, ETL for OMOP, and Scientific collaboration: opportunities for network studies in Latin America.

• The UK Symposium will be held September 18 at the University of Nottingham, preceded by an OMOP Training Day on September 17. The call for abstracts has opened, and the deadline is set for May 1.

• Registration and the call for participation are now open for the 2026 OHDSI Global Symposium, held Oct. 20–22 at the Hyatt Regency in New Brunswick, N.J. You can also read more about our 12 new tutorial offerings which will take place during Day 1 of the event. The deadline to submit your brief reports for the Collaborator Showcase is June 5 at 8 pm ET.

Book Your Hyatt Regency Guestroom Here

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