Key Takeaways

A 54-year-old man is recovering after receiving an experimental pig kidney

Another patient has survived seven months with a gene-edited pig kidney

A government-approved trial will test pig kidney transplants in 30 dialysis patients

TUESDAY, Sept. 9, 2025 (HealthDay News) — A 54-year-old New Hampshire man is recovering well after receiving an experimental pig kidney transplant.

Bill Stewart, an athletic trainer from Dover, underwent the procedure June 14 at Massachusetts General Hospital (Mass General) in Boston. “I really wanted to contribute to the science of it,” Stewart told The Associated Press .

Stewart’s case marks another step forward for the Mass General team, which is also following the progress of Tim Andrews, a New Hampshire man who has now lived seven mont

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