Surgeons in China transplanted a genetically modified pig liver segment into a patient with cancer and reported the graft supported metabolic function for 38 days before removal due to thrombotic microangiopathy; the case report appeared in the Journal of Hepatology. The group described immediate graft function including bile production and synthesis of albumin and clotting factors. Lead sentence: A xenotransplant surgery delivered short-term metabolic support from a porcine auxiliary liver graft, demonstrating feasibility of partial graft function in a human for over five weeks. The team published clinical course details, complications and intensive immunosuppression management in the Journal of Hepatology. Investigators attributed later complications to immune activation and clotting disorders; they treated the patient with plasma exchange and immunosuppression before removing the graft on day 38. Authors and commentators framed the operation as proof of principle that xenogeneic organs can temporarily substitute metabolic liver function, with implications for bridging strategies in organ shortage and for further gene‑editing and immunomodulation research.