Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com

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Παρασκευή 28 Απριλίου 2017

High tacrolimus clearance is a risk factor for acute rejection in the early phase after renal transplantation.

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Background: Patients with high tacrolimus clearance eliminate more drug within a dose interval compared to those with low clearance. Delays in dosing time will result in transient periods of lower concentrations in high versus low clearance patients. Transient subtherapeutic tacrolimus concentrations may induce acute rejection episodes. Methods: A retrospective study in all renal transplant patients treated with tacrolimus at our centre from 2009 to 2013 was conducted. The association between individually estimated tacrolimus clearance (daily tacrolimus dose [mg]/trough concentration [[mu]g/L]) and biopsy-proven acute rejection (BPAR) the first 90 days posttransplantation was investigated. Results: In total, 638 patients treated with oral tacrolimus were included in the analysis. Eighty-five (13.3%) patients experienced BPAR. Patients were stratified into 4 groups per their estimated clearance. The patients in the high clearance group had significantly higher incidence of BPAR (20.6%) with a HR of 2.39 (95% CI; 1.30-4.40) compared to the low clearance group. Clearance estimate (as a continuous variable) showed a hazard ratio of 2.25 (95% CI; 1.70-2.99) after adjusting for other risk factors. There were no significant differences in neither trough concentrations the first week after transplantation nor time to target trough concentration between patients later experiencing BPAR or not. Conclusion: High estimated clearance is significantly associated with increased risk of BPAR the first 90 days posttransplantation, and may predict an increased risk of rejection in the early phase following renal transplantation. Copyright (C) 2017 Wolters Kluwer Health, Inc. All rights reserved.

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