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A Porcine Heterotopic Heart Transplantation Protocol for Delivery of Therapeutics to a Cardiac Allograft
Published on: February 14, 2022
Cardiac Xenotransplantation: Barriers, Future Directions, and Ethical Considerations
Harris Z Whiteson1, William H Frishman2
1From the New York Medical College, School of Medicine, Valhalla, NY.
Insights
Xenotransplantation, using genetically engineered animal organs, offers hope for reducing heart transplant wait times. The first pig-to-human cardiac xenotransplantation shows promise for improving patient survival rates.
Area of Science:
- Transplantation Medicine
- Surgical Innovation
- Medical Ethics
Background:
- A critical shortage of registered organ donors and acceptable organs leads to long waiting lists for heart transplants.
- Over 12,700 individuals have died awaiting heart transplants since 1995.
- Strategies to address organ shortages include increasing donor registration and developing new therapies for managing suboptimal organs.
Purpose of the Study:
- To review the first pig-to-human cardiac xenotransplantation case.
- To discuss the potential of xenotransplantation in alleviating organ shortages.
- To explore barriers, future directions, and ethical considerations for cardiac xenotransplantation.
Main Methods:
- Analysis of the first live pig-to-human cardiac xenotransplantation case at the University of Maryland Medical Center (2021-2022).
- Review of existing literature on xenotransplantation and organ transplantation challenges.
- Discussion of ethical frameworks and regulatory considerations.
Main Results:
- The first successful pig-to-human cardiac xenotransplantation was performed on a live recipient.
- Xenotransplantation demonstrates potential to significantly reduce transplant wait times.
- This approach may improve quality of life and survival rates for transplant recipients.
Conclusions:
- Cardiac xenotransplantation is an emerging technology with the potential to address the critical shortage of human organs.
- Further research and ethical considerations are necessary for its implementation as a standard of care.
- Xenotransplantation offers a promising avenue to improve outcomes for patients with end-stage organ disease.
Abstract:
Since data collection began in 1995, 12,713 people have died while waiting for a heart transplant. Combined with a significant number of individuals with end-stage organ disease-eligible and waiting to receive a transplant offer-is a critical shortage of registered organ donors and acceptable organs. Strategies to overcome this organ shortage include efforts to increase the number of individuals registered as donors as well as new therapeutic approaches to managing organs that would have been otherwise deemed unacceptable for donation. One emerging technology that has the potential to further alleviate the demand for organs is xenotransplantation, where genetically engineered animal tissue or organ is transplanted into a human patient. While still in its elementary phases, this method shows great promise in reducing transplant wait-time and ultimately improving the quality of life and survival rate of transplant recipient patients. In 2021-2022, researchers at the University of Maryland Medical Center performed the first pig-to-human cardiac xenotransplantation on a live recipient. This review analyzes the case and discusses barriers, future directions, and ethical considerations to implementing cardiac xenotransplantation as a standard of care.
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