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Background and Aims Among peritoneal dialysis (PD) or hemodialysis (HD) while waiting for a kidney transplant (KT), which is better in terms of KT outcomes has long been of interest. Nowadays it is difficult to agree on which modality is better. The primary objective of this study was to compare the incidence of composite outcomes (delayed graft function, primary non-function, biopsy-proven acute rejection) within 1 year after primary adult KT between recipients taken PD and HD before KT (PD group vs. HD group, respectively). Method This study was a prospective, multi-sites cohort study. We used a propensity score matching to control for patients characteristics. Results Total 1040 patients were enrolled consecutively. Among them, 1030 patients (248, PD group; 782, HD group) were included in the final analysis. The HD group was older and had higher prevalence of diabetes, higher Charlson comorbidity index score, higher prevalence of positive PRA and more prescription of rituximab than the PD group significantly. After propensity score matching (246, PD group; 476, HD group), there were no differences in baseline characteristics between the two groups. In the whole population, there was no difference in the risk of the composite outcomes between the PD and HD groups (19% vs. 17%, hazard ratio [HR] 1.25, 95% confidence interval [CI] 0.88 ∼ 1.77, p = 0.21). There were also no differences in the risk of each component in the composite outcomes between the two groups. Primary non-function, a component of the composite outcomes did not occur in the both groups. There were no differences in the risks of death, frequency and total duration of re-hospitalization after KT for 1 year, and the changes of eGFR for 1 year between the two groups. The results from the propensity score matched population were consistent with those from the whole population. There was no difference in the risk of the composite outcomes between the PD and HD groups (19% vs. 17%, HR 1.17, 95% CI 0.80 ∼ 1.74, p = 0.43). Conclusion The pre-transplant dialysis modality does not affect the incidences of delayed graft function and acute rejection in early period of KT. (NCT01513707) This study was supported by Baxter Incorporated.

nephrology, dialysis, transplantation/nephrology dialysis transplantation

P1656THE IMPACT OF PRE-TRANSPLANT DIALYSIS MODALITY ON EARLY POST-TRANSPLANT PERIOD ADVERSE EVENTS : A PROSPECTIVE COHORT STUDY WITH PROPENSITY SCORE MATCHING