Pig kidney transplant helps US man avoid dialysis for nine months
A kidney transplanted from a pig has worked inside a patient for 271 days, the longest on record, say US doctors.
Doctors said the animal organ was used as a temporary “bridge” while the man waited for a transplant from a human donor.
Tim Andrews, who had end-stage kidney disease, was 66 when he received the pig kidney in the US in January 2025. He lived successfully with the genetically edited organ for 271 days before moving to short-term dialysis and receiving a donor human kidney.
It is the longest dialysis-free survival after a pig-kidney transplant in a living human and the first transition from pig-to-human kidney transplantation, doctors have said.
The team from Mass General Brigham in the US published their findings in the Lancet medical journal.
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