Outcomes of Delayed Graft Function in Kidney Transplant Recipients Stratified by Histologic Biopsy Findings |
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Authors: | Stacey Rolak Arjang Djamali Didier A Mandelbrot Brenda L Muth Margaret R Jorgenson Weixiong Zhong Patricia Liu Brad C Astor Sandesh Parajuli |
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Institution: | 1. Division of Nephrology, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI;2. Department of Pharmacy, University of Wisconsin Hospital and Clinics, Madison WI;3. Department of Pathology, University of Wisconsin School of Medicine and Public Health, Madison, WI;4. Department of Medicine, Oregon Health & Science University, Portland, OR;5. Department of Population Health Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin |
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Abstract: | Delayed graft function (DGF) after kidney transplantation is associated with an increased risk of graft failure. We studied the histologic findings among adult kidney transplant recipients transplanted between January 2000 and June 2015 who had DGF and had a kidney biopsy within 14 days of transplant. Death censored graft failure (DCGF) and death at 1 and 3 years after transplant were examined. A total of 269 transplant recipients fulfilled our selection criteria, of which 152 (56.51%) had acute tubular necrosis (ATN), 44 (16.4%) had acute rejection (AR), mainly T-cell mediated rejection (n = 31), 35 (13%) had ATN with AR (mainly T-cell mediated rejection, n = 26), and 38 (14.1%) had other pathology. Compared with those with ATN alone, kidney transplant recipients with AR alone had a significantly higher risk of DCGF at 1 year post transplant (adjusted hazard ratio = 3.70; 95% confidence interval 1.5-9.5; P = .006). Those with AR alone had an increased risk of DCGF at 3 years post transplant (hazard ratio = 3.10; 95% confidence interval 1.3-8.5; P = .01) in crude analyses. There was no association between DGF etiology and mortality. Early renal biopsy can be used to distinguish AR, which has protocolized treatments, from other etiologies. This could potentially alter allograft survival within 1 year of transplant complicated by DGF. |
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