Richard 'Rick' Slayman was the first person to receive a genetically modified pig kidney transplant on March 16, 2024.

His death has been announced, but the cause and timing are currently unclear.

Mr. Slayman had suffered from end-stage kidney disease, Type 2 diabetes, and hypertension, and was on dialysis for several years.

There is no indication from Massachusetts General Hospital that the transplant led to his death.

His transplant represented a milestone, offering hope to many facing similar health challenges.

In related advances, Lisa Pisano of New Jersey also received a genetically modified pig kidney and a mechanical heart pump in April.

Further details about Mr. Slayman's death are anticipated to be disclosed to the public.