Malignancy With Immunosuppression After Renal Transplantation: A Competing Risk Analysis

Area of Science:

• Nephrology
• Oncology
• Transplantation Medicine

Background:

• Malignancy is a significant concern for renal transplant recipients under immunosuppression.
• Accurate estimation of malignancy incidence is crucial for patient management.

Purpose of the Study:

• To analyze clinical characteristics of renal transplant recipients who developed malignancy.
• To apply competing risk analysis to accurately estimate malignancy incidence and identify risk factors.

Main Methods:

• Retrospective analysis of 596 renal transplant recipients from 1973 to 2017.
• Utilized competing risk analysis, Gray test, and Fine-Gray proportional hazard model.
• Calculated cumulative incidence of malignancy before allograft loss and associated risk factors.

Main Results:

• 78 out of 596 recipients developed malignancies, with skin cancer being the most common.
• Competing risk analysis estimated 20-year malignancy incidence at 16.2%, lower than the 25.6% from Kaplan-Meier.
• Increasing age at transplantation was a significant risk factor for malignancy (P = .0091).

Conclusions:

• Time-to-event analyses in renal transplant recipients with competing events require careful interpretation.
• Increasing age is a key risk factor, necessitating closer monitoring of older transplant recipients for malignancy.
• Accurate incidence estimation using competing risk analysis is vital for understanding post-transplant malignancy trends.