For the second time, Massachusetts General Hospital has transplanted a genetically edited pig kidney into a human.

A New Hampshire man fought for the chance at a pig kidney transplant, spending months getting into good enough shape to be part of a small pilot study of a highly experimental treatment. His effort paid off: Tim Andrews,

A New Hampshire man fought for the chance at a pig kidney transplant, spending months getting into good enough shape to be part of a small pilot study of a highly experimental treatment.

Massachusetts General Hospital announced Friday that Tim Andrews recovered well enough after the Jan. 25 transplant to leave the hospital a week later. Andrews calls himself “a new man,” free from two years of dialysis.