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  • Title: Pharmacokinetics of Novel Plant Cell-Expressed Taliglucerase Alfa in Adult and Pediatric Patients with Gaucher Disease.
    Author: Abbas R, Park G, Damle B, Chertkoff R, Alon S.
    Journal: PLoS One; 2015; 10(6):e0128986. PubMed ID: 26053270.
    Abstract:
    UNLABELLED: Taliglucerase alfa is a beta-glucocerebrosidase enzyme replacement therapy approved in the United States, Israel, and other countries for treatment of Type 1 Gaucher disease in adults, and is the first approved plant cell--expressed recombinant protein. In this report, taliglucerase alfa pharmacokinetics were assessed in adult and pediatric patients with Gaucher disease from separate multicenter trials of 30 Units/kg and 60 Units/kg doses infused every 2 weeks. Serial blood samples were obtained from adult patients following single-dose administration on day 1 (n = 26) and multiple doses at week 38 (n = 29), and from pediatric patients following administration of multiple doses of taliglucerase alfa for 10-27 months (n = 10). In both adult and pediatric patients, maximum plasma concentration (Cmax), area under the plasma concentration-time curve from time zero to last measureable concentration (AUC0-t), and from time zero to infinity (AUC0-∞) were higher after 60 Units/kg dose than 30 Units/kg dose. No tendency for accumulation or change in taliglucerase alfa pharmacokinetic parameters over time from day 1 to week 38 was observed with repeated doses of 30 or 60 Units/kg in adults. After multiple doses, mean (range) dose-normalized pharmacokinetic parameters were similar for adult versus pediatric patients receiving 60 Units/kg: Cmax expressed in ng/mL/mg was 42.4 (14.5-95.4) in adults and 46.6 (34.4-68.4) in pediatric patients, AUC0 t expressed in ng • h/mL/mg was 63.4 (26.3-156) in adults and 63.9 (39.8-85.1) in pediatric patients, t1/2 expressed in minutes was 34.8 (11.3-104) in adults and 31.5 (18.0-42.9) in pediatric patients and total body clearance expressed in L/h was 19.9 (6.25-37.9) in adults and 17.0 (11.7-24.9) in pediatric patients. These pharmacokinetic data extend the findings of taliglucerase alfa in adult and pediatric patients. TRIAL REGISTRATION: ClinicalTrials.gov. NCT00376168 (in adults); NCT01411228 (in children).
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