Pig Kidneys Successfully Transplanted Into Humans.
Written by Desmond The transplantation of genetically modified pig kidneys into humans is one of the most remarkable developments in modern medicine. For decades, scientists have investigated whether animal organs could be used to help people suffering from organ failure. Recent breakthroughs suggest that this idea may be moving from scientific theory toward a practical medical option. A major milestone was achieved in the United States when doctors at Massachusetts General Hospital transplanted a genetically edited pig kidney into a human patient. One of the most significant cases involved Tim Andrews, who received a genetically engineered pig kidney in January 2025. According to researchers at Mass General Brigham, the kidney functioned well enough to keep Andrews off dialysis for 271 days . In January 2026, he subsequently received a human donor kidney. His case was reported in The Lancet and represents the longest documented dialysis-free survival following a pig-ki...