Scientists Transplant a Gene-Edited Pig Liver Into a Person

In the past year, doctors have performed history-making transplants, placing genetically modified pig kidneys and pig hearts into patients. Now, a group of doctors and scientists in China report they have done the same with a pig liver.

In a study published in Nature, the group describes transplanting a gene-edited pig liver into a brain-dead patient. At the request of the patient’s family, the study was terminated after 10 days and the pig liver was removed. The patient’s original liver was not removed...