Core Insights - A 67-year-old American man, Tim Andrews, has survived six months after receiving a genetically modified pig kidney transplant, marking a significant milestone in organ transplantation [1] - The transplant was performed under the "compassionate use" principle, allowing the use of unapproved treatments for patients in critical need [1] - The pig kidney was sourced from a genetically edited pig, which underwent three modifications to reduce rejection risks and complications [1] Group 1 - The six-month survival period post-transplant is considered the most critical phase for patients, with potential complications including anemia and immune rejection [1] - Successful survival beyond six months is viewed optimistically, with a further milestone anticipated at twelve months [1] - The previous record for the longest survival of a genetically modified pig organ was four months and nine days, achieved by a 53-year-old woman, Tawana Rooney, before experiencing rejection [1]