Abstract
Donor organ quality is a key determinant of graft outcomes in deceased donor kidney transplantation (DDKT). The predictive values of baseline histopathology and several clinical scoring systems for long-term graft outcomes have been evaluated, but the results remain controversial. We screened 167 patients who underwent DDKT at Ulsan University Hospital from April 2003 to June 2016. Among them, 66 patients who underwent baseline kidney biopsy and whose kidney donor risk index (KDRI) was available were included in this analysis. All baseline biopsies were rescored according to the updated Banff classification. Median follow-up was 22 months. Mean age of recipients and donors was 51.4 and 44.7 years, respectively. Mean KDRI was 1.40±0.44. During follow-up, delayed graft function and biopsy-proven acute rejection (BPAR) developed in 7 and 11 patients, respectively. Graft failure occurred in 2 patients. In Cox regression analysis, interstitial fibrosis/tubular atrophy (IFTA) (hazard ratio (HR) = 3.59; p=0.049) was a significant risk factor for BPAR. In multivariate linear regression, age (standardized β (SB) = -0.282; p=0.002), BPAR (SB = -0.406; p < 0.001), KDRI (SB = -0.277; p=0.003), and IFTA (SB = -0.298; p=0.001) were significant predictors of last-visit estimated glomerular filtration rate (eGFR). Several clinical and pathologic parameters, such as KDRI and IFTA, may be helpful for predicting long-term graft outcomes, including BPAR and last-visit eGFR, in DDKT. .
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