International Thoracic Organ Transplant (TTX) Registry

The International Thoracic Organ Transplant (TTX) Registry was created to provide on-going, current data regarding patient, donor, and transplant characteristics as well as post-transplant outcomes.  Our Registry is the only one of its kind.  All institutions and countries performing heart, heart-lung, and/or lung transplantation are invited to submit data to the TTX Registry.

The Data Coordinating Center (DCC) for the TTX Registry is the United Network for Organ Sharing (UNOS). UNOS hosts the database and manages the collection and analysis of the data. Questions about the TTX Registry and the data submission process may be directed to

See Also: Research Oversight Committee

Below are the Steering Committee Members who manage the TTX Registry

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Rebecca Cogswell MD (2025)


University of Minnesota
Minneapolis, MN, USA
Wida Cherikh PhD


Richmond, Virginia, United States
Michael Harhay (2024)


Philadelphia, Pennsylvania, United States
Don Hayes MD (2024)

Associate Medical Director - Pediatric Lung

Cincinnati Children's Hospital Medical Center
Cincinnati, Ohio, United States
Eileen Hsich MD (2024)

Associate Medical Director - Adult Heart

Cleveland Clinic Foundation
Shaker Heights, Ohio, United States
Michael Perch MD (2024)

Associate Medical Director - Adult Lung

Copenhagen, Denmark
Luciano Potena MD, PhD (2024)


University of Bologna
Bologna, Italy
Tajinder Singh MD, MSc (2024)

Associate Medical Director-Pediatric Heart

Boston Children's Hosp
Boston, Massachusetts, United States
Andreas Zuckermann MD (2024)

OEO Relations

Medical Univ of Vienna
Wien, Wien, Austria