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Tim Andrews transitions to human donor kidney after nine months with EGEN-2784 pig kidney
Tim Andrews, who received an EGEN-2784 pig kidney on January 25, 2025, underwent removal of the xenograft on October 23, 2025, after nine months of successful function. He then received a deceased-donor human kidney on January 13, 2026, after 82 days of dialysis, making him the first known patient to transition successfully from pig-kidney xenotransplant to human allograft. His case was published in The Lancet, demonstrating xenotransplants as a viable bridge therapy.
- Pig kidney provided 271 days dialysis-free function, the longest achieved with a gene-edited porcine organ.
- First documented transition from xenotransplant to successful human kidney transplant.
- Human kidney remained without rejection for over seven months at time of publication.