Abstract
Kidney transplant (KT) outcomes from high kidney donor profile index (KDPI ≥85%) donors with acute kidney injury (AKI) remain underreported. KT from 172 high KDPI Acute Kidney Injury Network (AKIN) stage 0-1 donors and 76 high KDPI AKIN stage 2-3 donors from a single center were retrospectively assessed. The AKIN 2-3 cohort had more delayed graft function (71% vs. 37%, p<.001). At one year, there were no differences in the estimated glomerular filtration rate (44±17 vs. 46±18, p=.42) or fibrosis on protocol biopsy (ci, p=.85). Donor terminal creatinine (p=.59) and length of delayed graft function (p=.39) did not impact one-year eGFR. There were more primary nonfunction (PNF) events in the high KDPI AKIN 2-3 group (5.3% vs. 0.6%, p=.02). With a median follow-up of 3.8years, one-year death-censored graft failure was 3.5% for AKIN 0-1 and 14.5% for AKIN 2-3 (HR 2.40, 95% CI 1.24-4.63, p=.01). Although AKIN stage 2-3 high KDPI kidneys had comparable one-year eGFR to AKIN stage 0-1 high KDPI kidneys, there were more PNF occurrences and one-year death-censored graft survival was reduced. Given these findings, additional precautions should be undertaken when assessing and utilizing kidneys from severe AKI high KDPI donors.
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