Surgeons at Massachusetts General Hospital have removed a genetically engineered pig kidney from a 67-year-old New Hampshire man after a period of decreasing kidney function, the hospital confirmed to WIRED in a statement. The organ functioned for nearly nine months, longer than previous pig organ transplants, before it was removed on October 23. Tim Andrews received the pig kidney on January 25 after being on dialysis for more than two years due to end-stage kidney disease. A second person, Lisa Pisano, had a combined pig kidney transplant and heart pump surgery at NYU Langone Health, but had the kidney removed in May 2024 after less than two months due to failure. Before the pig kidney transplants, two patients received genetically engineered pig hearts at the University of Maryland in 2022 and 2023 but never became healthy enough to leave the hospital.