Elsevier Oct 9 2025 An important new study in the Journal of Hepatology , published by Elsevier, reports the world's first auxiliary liver xenotransplant from a genetically engineered pig to a living human recipient. The patient survived for 171 days, offering proof-of-concept that genetically modified porcine livers can support key metabolic and synthetic functions in humans, while also underscoring the complications that currently limit long-term outcomes. According to the World Health