Pig kidney transplant survives 61 days in brain-dead human recipient

Scientists have successfully transplanted a genetically engineered pig kidney into a brain-dead human recipient, keeping it functional for 61 days. The breakthrough offers hope for addressing the severe shortage of donor organs, with only 3% of Americans suffering from late-stage kidney disease currently receiving transplants each year.

The study involved a pig kidney modified to reduce rejection risks. When transplanted into a brain-dead patient, the organ worked effectively as a human kidney replacement. Over two months, researchers monitored immune responses and identified three key reactions.

Blood tests revealed biomarkers that could detect rejection up to five days before symptoms appeared. The team also found that antibodies and T cells drove the rejection process. By using FDA-approved drugs, they managed to reverse the rejection, stabilising the kidney's function.

Researchers are now focusing on refining immune-suppressing treatments. Their goal is to target specific antibodies and T cells, improving the chances of long-term success in xenotransplantation. If successful, this approach could significantly expand the supply of viable organs for patients in need.

The findings suggest genetically modified pig kidneys could one day bridge the gap in organ shortages. Early detection of rejection through blood biomarkers may allow for quicker intervention. Further studies will determine whether these results can be replicated in living patients.