Tim Andrews of New Hampshire received a genetically modified pig kidney at Mass General Brigham in January. Massachusetts General Hospital

A man who lived with a genetically modified pig kidney for a record 271 days had the organ removed and will return to dialysis.

Tim Andrews of New Hampshire received the transplant in January, but surgeons at Mass General Brigham removed the organ Thursday because of a decline in kidney function.

Andrews, 67, was the fourth living patient in the US to get a kidney transplant from a pig that had been genetically modified to help prevent organ rejection and other complications.

Tim Andrews took Dr. Sanjay Gupta to his old dialysis center for the documentary “Dr. Sanjay Gupta Reports: Animal Pharm." CNN

Andrews, who had had diabetes since the

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