Dataset Information

Efficacy and safety of prolonged-release tacrolimus in stable pediatric allograft recipients converted from immediate-release tacrolimus - a Phase 2, open-label, single-arm, one-way crossover study.

ABSTRACT: There are limited clinical data regarding prolonged-release tacrolimus (PR-T) use in pediatric transplant recipients. This Phase 2 study assessed the efficacy and safety of PR-T in stable pediatric kidney, liver, and heart transplant recipients (aged ?5 to ?16 years) over 1 year following conversion from immediate-release tacrolimus (IR-T), on a 1:1 mg total-daily-dose basis. Endpoints included the incidence of acute rejection (AR), a composite endpoint of efficacy failure (death, graft loss, biopsy-confirmed AR, and unknown outcome), and safety. Tacrolimus dose and whole-blood trough levels (target 3.5-15 ng/ml) were also evaluated. Overall, 79 patients (kidney, n = 48; liver, n = 29; heart, n = 2) were assessed. Following conversion, tacrolimus dose and trough levels remained stable; however, 7.6-17.7% of patients across follow-up visits had trough levels below the target range. Two (2.5%) patients had AR, and 3 (3.8%) had efficacy failure. No graft loss or deaths were reported. No new safety signals were identified. Drug-related treatment-emergent adverse events occurred in 28 patients (35.4%); most were mild, and all resolved. This study suggests that IR-T to PR-T conversion is effective and well tolerated over 1 year in pediatric transplant recipients and highlights the importance of therapeutic drug monitoring to maintain target tacrolimus trough levels.

SUBMITTER: Rubik J

PROVIDER: S-EPMC6852421 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature

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Efficacy and safety of prolonged-release tacrolimus in stable pediatric allograft recipients converted from immediate-release tacrolimus - a Phase 2, open-label, single-arm, one-way crossover study.

Rubik Jacek J Debray Dominique D Kelly Deirdre D Iserin Franck F Webb Nicholas J A NJA Czubkowski Piotr P Vondrak Karel K Sellier-Leclerc Anne-Laure AL Rivet Christine C Riva Silvia S Tönshoff Burkhard B D'Antiga Lorenzo L Marks Stephen D SD Reding Raymond R Kazeem Gbenga G Undre Nasrullah N

Transplant international : official journal of the European Society for Organ Transplantation 20190827 11

There are limited clinical data regarding prolonged-release tacrolimus (PR-T) use in pediatric transplant recipients. This Phase 2 study assessed the efficacy and safety of PR-T in stable pediatric kidney, liver, and heart transplant recipients (aged ≥5 to ≤16 years) over 1 year following conversion from immediate-release tacrolimus (IR-T), on a 1:1 mg total-daily-dose basis. Endpoints included the incidence of acute rejection (AR), a composite endpoint of efficacy failure (death, graft loss, bi ...[more]

PMID: 31325368

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Project description:INTRODUCTION:Different prolonged-release formulations of tacrolimus are available. To date, the pharmacokinetic (PK) profile of LCP-tacrolimus (LCPT; Envarsus®) has not been compared with PR-Tac (Advagraf®) in de novo kidney transplant recipients. These profiles will guide clinical recommendations for the initiation and dose titration strategies of once-daily tacrolimus formulations. METHODS:This randomized, parallel-group, open-label, multicenter PK study randomized 75 de novo, adult, white kidney transplant recipients to LCPT 0.17 mg/kg/day (n?=?37) or PR-Tac 0.20 mg/kg/day (n?=?38) for 4 weeks. Dose adjustments were permitted to target a pre-defined therapeutic range based on measured trough blood concentrations. RESULTS:PK analysis (days 1, 3, 7 and 14) included 68 patients (LCPT, n?=?33; PR-Tac, n?=?35). Similar proportions of patients were within the pre-defined therapeutic tacrolimus trough blood concentration range, with?<?12% in each group having below-target trough levels over the study period. LCPT demonstrated?~?30% greater relative bioavailability [LCPT/PR-Tac adjusted geometric mean ratio: day 3, 1.32 (p?=?0.007); day 7, 1.25 (p?=?0.051); day 14, 1.43 (p?=?0.002)] and?~?30% lower peak-to-trough percentage fluctuation of blood concentration [LCPT/PR-Tac adjusted geometric mean ratio: day 3, 0.70 (p?<?0.001); day 7, 0.68 (p?<?0.001); day 14, 0.73 (p?=?0.004)] in addition to longer time to maximum blood concentration (tmax), lower maximum concentration (Cmax) and a consistently lower daily dose (~?40% dose reduction with LCPT vs. PR-Tac by day 28). Safety profiles were similar. CONCLUSION:In de novo kidney transplant recipients, prolonged-release formulations of tacrolimus can reach therapeutic concentrations in the immediate post-transplant period. LCPT has greater relative bioavailability and lower peak-to-trough fluctuation compared with PR-Tac. TRIAL REGISTRATION:Registered at ClinicalTrials.gov; study number NCT02500212. FUNDING:Chiesi Farmaceutici S.p.A.

Dataset Information

Efficacy and safety of prolonged-release tacrolimus in stable pediatric allograft recipients converted from immediate-release tacrolimus - a Phase 2, open-label, single-arm, one-way crossover study.

Publications

Efficacy and safety of prolonged-release tacrolimus in stable pediatric allograft recipients converted from immediate-release tacrolimus - a Phase 2, open-label, single-arm, one-way crossover study.

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