Q1519In 2025 a man lived for a record 271 days with a gene-edited pig kidney — the longest anyone has yet been kept alive by an organ from another species.
Tim Andrews received the kidney in early 2025; it filtered his blood for about nine months before being removed. Researchers edit the pig's genes to switch off the traits that make the human body reject the organ. With human donors far too few, animal organs — xenotransplants — are moving from experiment towards carefully watched clinical trials.









