Kidney allograft failure in the steroid‐free immunosuppression era: A matched case‐control study

MM Alkadi, J Kim, MJ Aull, JE Schwartz… - Clinical …, 2017 - Wiley Online Library
MM Alkadi, J Kim, MJ Aull, JE Schwartz, JR Lee, A Watkins, JB Lee, DM Dadhania
Clinical Transplantation, 2017Wiley Online Library
We studied the causes and predictors of death‐censored kidney allograft failure among
1670 kidney recipients transplanted at our center in the corticosteroid‐free maintenance
immunosuppression era. As of January 1, 2012, we identified 137 recipients with allograft
failure; 130 of them (cases) were matched 1‐1 for recipient age, calendar year of transplant,
and donor type with 130 recipients with functioning grafts (controls). Median time to allograft
failure was 29 months (interquartile range: 18‐51). Physician‐validated and biopsy …
Abstract
We studied the causes and predictors of death‐censored kidney allograft failure among 1670 kidney recipients transplanted at our center in the corticosteroid‐free maintenance immunosuppression era. As of January 1, 2012, we identified 137 recipients with allograft failure; 130 of them (cases) were matched 1‐1 for recipient age, calendar year of transplant, and donor type with 130 recipients with functioning grafts (controls). Median time to allograft failure was 29 months (interquartile range: 18‐51). Physician‐validated and biopsy‐confirmed categories of allograft failure were as follows: acute rejection (21%), glomerular disease (19%), transplant glomerulopathy (13%), interstitial fibrosis tubular atrophy (10%), and polyomavirus‐associated nephropathy (7%). Graft failures were attributed to medical conditions in 21% and remained unresolved in 9%. Donor race, donor age, human leukocyte antigen mismatches, serum creatinine, urinary protein, acute cellular rejection, acute antibody‐mediated rejection, BK viremia, and CMV viremia were associated with allograft failure. Independent predictors of allograft failure were acute cellular rejection (odds ratio: 18.31, 95% confidence interval: 5.28‐63.45) and urine protein ≥1 g/d within the first year post‐transplantation (5.85, 2.37‐14.45). Serum creatinine ≤1.5 mg/dL within the first year post‐transplantation reduced the odds (0.29, 0.13‐0.64) of allograft failure. Our study has identified modifiable risk factors to reduce the burden of allograft failure.
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