A 66-year-old kidney failure patient lived on a genetically edited pig kidney for 271 days dialysis free, the longest such survival recorded, before the organ failed and he received a human kidney transplant. Doctors confirmed no infection passed from the pig organ to the patient at any point, easing a key safety concern around xenotransplantation.

Gene-edited pig kidneys could offer a lifeline to patients stuck waiting for a human donor.

Tim Andrews, 67, from New Hampshire, US, lived with the animal organ for nine months before later receiving a human donation.

Trial in US offers hope for solving organ shortage