Graft Intolerance Syndrome Complicates Retransplantation

Area of Science:

• Nephrology
• Transplantation Immunology

Background:

• Non-functioning renal grafts affect ~4% of incident dialysis patients.
• Complete immunosuppression withdrawal risks HLA sensitization and graft intolerance syndrome (GIS).

Purpose of the Study:

• To investigate the prevalence, clinical presentation, and outcomes of renal graft intolerance syndrome (GIS).
• To identify predictive factors for GIS development in patients with renal graft failure.

Main Methods:

• Retrospective observational study of 63 patients with renal graft failure (2012-2022).
• Exclusion of immediate graft losses due to thrombosis or technical issues.
• Analysis of demographic, clinical characteristics, GIS evolution, and comparison with non-GIS patients.

Main Results:

• 36.5% of patients developed GIS, primarily presenting as anemia and graft pain.
• GIS was linked to increased HLA sensitization and a lower retransplantation rate (4.3% vs 25%).
• Graft failure within 2 years post-transplant was a significant predictor of GIS (HR=2.740).

Conclusions:

• GIS is more prevalent in early graft failure (within 2 years).
• Despite intensified immunosuppression, many GIS patients required graft embolization.
• GIS negatively impacts HLA sensitization and retransplantation potential.