Researchers published two Nature papers detailing a 61‑day survival of a genetically modified pig kidney transplanted into a brain‑dead human recipient. The studies provided a multiomics and physiological 'encyclopedia' of xenotransplantation, tracking immune activation, graft physiology, and drivers of rejection over the extended window. The work enumerated barriers—including cell‑mediated and humoral responses—and potential engineering and immunosuppression strategies to extend durability. Authors positioned the dataset as a resource to accelerate xenotransplant refinement and regulatory assessment as teams move toward clinical feasibility.