Kidney Xenotransplantation: Are We Ready for Prime Time?

Area of Science:

• Transplantation Biology
• Immunology
• Surgical Innovation

Background:

• Growing interest and advancements suggest readiness for human kidney xenotransplant trials.
• Xenotransplantation, particularly using genetically modified pigs, offers a potential solution to organ shortages.

Purpose of the Study:

• To review obstacles overcome and remaining challenges in xenotransplantation.
• To discuss past human trials and their implications.
• To identify overlooked factors and propose future research directions.

Main Methods:

• Review of existing literature on xenotransplantation, focusing on pig-to-primate models.
• Analysis of documented human xenotransplant cases (kidney and heart).
• Examination of immunosuppression strategies and their impact on survival.

Main Results:

• Successful pig-to-non-human-primate kidney xenotransplantation achieved with optimized immunosuppression.
• Three limited follow-up kidney xenotransplants in brain-dead humans reported.
• One pig-to-human heart xenotransplant demonstrated 2-month survival.

Conclusions:

• Xenotransplantation holds significant promise for addressing organ scarcity.
• Balancing scientific progress with patient safety is paramount.
• Further research is needed to overcome complexities and ensure successful clinical application.