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,

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

The first recipient of a gene-edited pig kidney died from cardiac causes 52 days after xenotransplantation. The world's first recipient of a gene-edited pig kidney died from cardiac causes within 2 months, but there was no evidence of xenograft rejection, a brief report detailed.