Key Takeaways

A 67-year-old man lived 271 days with a gene-edited pig kidney

The case marks the longest survival so far for an animal-to-human organ transplant

Larger clinical trials focused on pig kidney transplants are underway

TUESDAY, Oct. 28, 2025 (HealthDay News) — A 67-year-old New Hampshire man has set a medical milestone after living more than nine months with a gene-edited pig kidney, doctors announced Monday.

The experimental transplant, performed by surgeons at Mass General Brigham, lasted 271 days, the longest anyone has survived with an animal organ.

Doctors said Tim Andrews of Concord, New Hampshire, had the transplanted kidney removed on Oct. 23 after it began to lose function. He has since resumed dialysis while remaining on the national kidney transplant list.

Andr

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