eGenesis Pig Kidney Functions 285 Days in Massachusetts General Patient
A woman who received a gene-edited pig kidney transplant at Massachusetts General Hospital last November has now gone 285 days without needing dialysis, breaking the previous 271-day record set by Tim Andrews. The kidney was engineered by eGenesis using Crispr gene editing to remove pig genes that trigger immune rejection and add human genes, and she is the fifth patient to receive one of the company's kidneys.
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With average wait times for human kidneys running three to five years and dialysis steadily eroding patients' health, a durable animal-organ alternative could dramatically change outcomes for thousands stuck on transplant lists. This sustained result adds real-world evidence that gene-edited pig organs might bridge the gap between organ scarcity and patient need, though longer-term safety and rejection risks still need to be proven across more patients.
- A pig kidney transplanted in November has functioned dialysis-free for 285 days, a new record.
- eGenesis used Crispr editing to remove rejection-triggering pig genes and insert human genes.
- She is the fifth person to receive an eGenesis pig kidney as trials continue toward wider use.
Source: wired.com — Emily Mullin, 2026-09-03
Published there as: “Transplanted Pig Kidney Still Working After a Record-Setting 9 Months in a Patient”
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