Genetically modified pig kidney keeps man alive for record nine months

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Published: 2026-09-03T22:45:17.801Z • Permanent link

Tim Andrews, a 66-year-old man from the United States, has defied medical odds by staying off dialysis for an unprecedented nine months thanks to a groundbreaking genetically modified pig kidney. The remarkable feat occurred at the University of Maryland Medical Center, where Andrews was undergoing treatment for end-stage renal disease. Wilma, a genetically modified pig, was the donor of the kidney, which was transplanted into Andrews in February 2023. The surgery was led by Dr. David Cooper, a renowned transplant surgeon at the University of Maryland, who has been instrumental in developing the genetically engineered pig kidney technology.

The genetically modified kidney, which was designed to evade rejection by the human immune system, has proven to be a game-changer in the field of xenotransplantation – the transplantation of organs or tissues from one species to another. The technology has been in development for over a decade, with several companies, including United Therapeutics and United BioMolecular Research Institute, working tirelessly to overcome the significant barriers to success. The University of Maryland Medical Center has played a crucial role in advancing this technology, with Dr. Cooper's team conducting numerous experiments to improve the function and viability of the genetically modified pig kidneys.

The nine-month mark is a significant milestone, as it represents a major breakthrough in the field of xenotransplantation. The fact that Andrews has been able to stay off dialysis for such an extended period of time suggests that the genetically modified pig kidney is not only functional but also capable of sustaining his life without the need for dialysis. The implications of this technology are far-reaching, and it is likely to have a profound impact on the field of organ transplantation, particularly for patients who are waiting for a kidney transplant.

The successful transplantation of a genetically modified pig kidney has significant implications for the Data Sources domain, particularly for companies and research communities working in the field of xenotransplantation. United Therapeutics, one of the leading companies in the field, has been working to develop a genetically modified pig kidney that can be used for transplantation. The company's technology has shown promising results in animal trials, and the successful transplantation of a pig kidney in a human patient is a major step forward in the development of this technology. The success of this technology could also have a significant impact on the market for kidney transplantation, potentially reducing the number of patients who are waiting for a transplant.

The research community has also been eagerly awaiting the development of this technology, as it has the potential to revolutionize the field of organ transplantation. The University of Maryland Medical Center has been at the forefront of this research, and the successful transplantation of a pig kidney in a human patient is a testament to the expertise and dedication of Dr. Cooper's team. The success of this technology could also have a significant impact on the policy environment surrounding organ transplantation, potentially leading to increased funding and support for research in this area.

The development of genetically modified pig kidneys is not a new concept, but it has been met with significant skepticism and regulatory hurdles in the past. In the United States, the FDA has been cautious in its approach to xenotransplantation, requiring extensive testing and evaluation before approving any new technology. However, the successful transplantation of a pig kidney in a human patient is a major step forward in the development of this technology, and it is likely to pave the way for increased funding and support for research in this area.