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Gender differences in the risk for chronic renal allograft failure
H U Meier-Kriesche1, A O Ojo, S F Leavey
1Department of Medicine, University of Michigan, Ann Arbor 48109-0364, USA.
Transplantation
|March 10, 2001
Summary
Female kidney transplant recipients show better overall survival but higher acute rejection rates. However, they experience less chronic allograft failure, indicating distinct immunological responses influencing long-term graft outcomes.
Area of Science:
- Nephrology
- Immunology
- Transplantation
Background:
- Immunological reactivity differs between sexes, yet gender-based graft survival in renal transplantation remains unclear.
- This study investigates gender-specific outcomes in a large cohort of primary renal transplant recipients.
Purpose of the Study:
- To analyze gender-based differences in graft survival and causes of graft loss in renal transplant recipients.
- To explore the paradox of known sex differences in immunity versus reported similar graft survival.
Main Methods:
- Utilized logistic regression and Cox proportional hazard models on 73,477 primary renal transplants from the US Renal Data System.
- Investigated graft loss due to acute rejection (AR) and chronic allograft failure (CAF), adjusting for 15 covariates.
Main Results:
- Female recipients had significantly better overall 8-year graft and patient survival.
- Females showed a 10% increased odds of AR but a 10% lower risk of CAF.
- Age significantly increased CAF risk, with a greater effect in males.
Conclusions:
- Despite similar death-censored graft survival, gender influences immunological behavior post-renal transplant.
- Females exhibit a higher incidence of acute rejection but a reduced risk of chronic allograft failure.
- These findings highlight sex-specific immunological differences impacting renal allograft outcomes.