A single-center experience with six-antigen-matched kidney transplants

Area of Science:

• Nephrology
• Immunology
• Transplantation Science

Background:

• Kidney transplantation is a vital treatment for end-stage renal disease.
• Optimizing donor-recipient matching is crucial for graft survival and reducing complications.
• The United Network of Organ Sharing six-antigen-matched (6-AgM) program aims to improve transplant outcomes.

Purpose of the Study:

• To evaluate the outcomes of kidney transplant recipients using the 6-AgM program.
• To compare perioperative and short-term morbidity of 6-AgM cadaver kidney recipients with living-related donor (LRD) and less-matched cadaver recipients.

Main Methods:

• Retrospective review of solitary kidney transplantations over 24 months (1992-1993).
• Inclusion of adult patients receiving cadaver or living donor kidney transplants.
• Assessment of mortality, morbidity, patient and graft survival, rejection episodes, length of stay, readmissions, and postoperative complications.

Main Results:

• 6-AgM recipients experienced fewer rejection episodes, which were more steroid-responsive.
• These recipients had shorter hospital stays (22.6 days) and lower rates of delayed graft function compared to standard cadaver recipients.
• Graft and patient survival were excellent across all groups, with 6-AgM recipients showing outcomes similar to LRD recipients.

Conclusions:

• Identical HLA matching (6-AgM) for cadaver kidney recipients significantly improves graft and patient survival.
• 6-AgM transplantation leads to reduced perioperative morbidity compared to less-matched cadaver transplants.
• Sharing 6-AgM kidneys is recommended to optimize transplant outcomes and resource allocation.