In Collaboration with the International Xenotransplantation Association (IXA)

May 21, 2025

Xenotransplantation:
Updates from the Transplantation Journal

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Wednesday, May 21, 2025 - 8:00 AM (Local time in Montreal)
Local time (Corresponding local time at your current location)
The duration of this presentation is scheduled for 60 minutes.

Overview

Join our panel of experts who discuss important topics in Xenotransplantation. This panel discussion is complemented by a series of related articles recently published in Transplantation Journal. (click the titles below to view the papers)

Outline

  • How xenotransplant research started and what are the major barriers to success.
  • Research and innovation – haem & immunological barriers, genetic engineering etc.

  • Key clinical trials in xenotransplantation.
  • Issues with rejection and infection.
  • Promise and what are the questions still to be answered moving forward.

  • What are the major zoonotic infections which have been encountered so far?
  • What challenges exist in diagnosis/treatment of these?
  • What are the current tools and research pipelines to help address this problem?

  • What role does IVIG have in xenotransplantation?
  • What is the concern about using IVIG and what can be done to address these?

  • How can global efforts be best focused to moving the field forward?
  • Discussion around key aspects of a xenotransplantation inventory and data harmonisation.
  • Development of guidance, regulatory oversight and ethics in the field.
TTS Education Committee Co-Chair
Jennifer Li, Australia
Organizer
Bio
Jonathan Bromberg, United States 
Chair
Bio
President, International Xenotransplantation Association
Muhammad Mohiuddin, United States 
Chair
Bio
Immediate Past-President, International Xenotransplantation Association
Wayne J. Hawthorne, Australia
Speaker
Bio
Councilor, International Xenotransplantation Association
Raphael Meier, United States
Speaker
Bio
President-Elect, International Xenotransplantation Association
Jay Fishman, United States
Speaker
Bio
Robin K. Avery, United States
Speaker
Bio
Leo Bühler, Switzerland
Speaker
Bio

Use the image below to promote this event (right-click to download)


Xenotransplantation White Papers in Transplantation

International Xenotransplantation Association (IXA) Position Paper on the History, Current Status, and Regulation of Xenotransplantation

Hawthorne, Wayne et al.
Transplantation ():10.1097/TP.0000000000005373, April 08, 2025. | DOI: 10.1097/TP.0000000000005373


Landmark xenotransplants are the result of 30+ years of innovation—genetic, immunologic, ethical & regulatory. The IXA, TTS & WHO have laid the groundwork for safe clinical translation.

Key breakthroughs include:

  • Genetic modifications of source pigs
  • Novel immunosuppressive strategies
  • Technical innovations
  • Development of ethical & regulatory frameworks
Each was critical to safe clinical translation.
The International Human Xenotransplantation Inventory: Current Data and Future Directions

Hu, Xiaowei et al.
Transplantation ():10.1097/TP.0000000000005367, April 08, 2025. | DOI: 10.1097/TP.0000000000005367


Xenotransplantation is emerging as a solution to the global organ shortage. Since 2006, a WHO-endorsed registry has tracked 50+ clinical cases—paving the way for safer, transparent progress.

Over the past 2 decades, the registry reveals key trends:

  • Types of xenotransplants
  • Source animals (mostly pigs)
  • Regulatory status of procedures
  • Countries involved
Xenotransplantation in Humans: A Reality Check

Tector, A. Joseph
Transplantation 109(2):p 231-234, February 2025. | DOI: 10.1097/TP.0000000000005223


Thirty years after the initial strategies to develop genetically engineered pigs for use as organ donors in xenotransplantation were described, evaluation of these pig organs in humans has begun.

Path to clinical xenotransplantation. The development of a new pig with a better crossmatch in patients will require (A) additional genetic engineering followed by testing in a preclinical nonhuman primate model that will include identification of an immunosuppressive regimen that can be used in clinical trials (B). The development of more detailed histocompatibility testing will facilitate the identification of the most appropriate initial recipients to ensure clinical success (C).

Special Feature:

International Xenotransplantation Association (IXA) Position Paper on Infectious Disease Considerations in Xenotransplantation

Fishman, J. A., Denner, J., & Scobie, L. (2025).
Transplantation ():10.1097/TP.0000000000005371, April 08, 2025. | DOI: 10.1097/TP.0000000000005371



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