Man With Baboon Liver Transplant Has Setback

Doctors are not certain why a baboon’s liver that was transplanted into a man in June has deteriorated, a University of Pittsburgh Medical Center spokeswoman says. The 35-year-old patient was listed in critical but stable condition with sepsis, a blood infection, and impaired liver function. Antibiotics have reduced his fever and stabilized his blood pressure.

The man, whose name has been withheld at his request, underwent the first animal-to-human liver transplant in an 11-hour operation. Until recently, his historic surgery had gone smoothly.