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Double-Blind, Placebo-Controlled Study of Bezlotoxumab in Children Receiving Antibacterial Treatment for Clostridioides difficile Infection (MODIFY III)

TJ. Sferra, T. Merta, M. Neely, C. Murta de Oliveira, A. Lassaletta, C. Fortuny Guasch, MB. Dorr, G. Winchell, FH. Su, S. Perko, D. Fernsler, H. Waskin, SR. Holden

. 2023 ; 12 (6) : 334-341. [pub] 2023Jun30

Jazyk angličtina Země Anglie, Velká Británie

Typ dokumentu randomizované kontrolované studie, multicentrická studie, časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/bmc23017040

Grantová podpora
Merck Sharp & Dohme

BACKGROUND: Therapies to prevent recurrence of Clostridioides difficile infection (CDI) in pediatric patients are needed. Bezlotoxumab is a fully human monoclonal antibody approved for prevention of recurrent CDI in adults. We assessed the pharmacokinetics, safety, tolerability, and efficacy of bezlotoxumab in pediatric patients. METHODS: MODIFY III was a multicenter, double-blind, placebo-controlled study of bezlotoxumab in children (1 to <18 years) receiving antibacterial treatment for CDI. Participants were randomized 3:1 to receive a single infusion of bezlotoxumab (10 mg/kg) or placebo and were stratified by age at randomization (cohort 1: 12 to <18 years, cohort 2: 1 to <12 years). The primary objective was to characterize bezlotoxumab pharmacokinetics to support dose selection for pediatric patients; the primary endpoint was the area under the bezlotoxumab serum concentration-time curve (AUC0-inf). Safety, tolerability, and efficacy were monitored for 12 weeks post-infusion. RESULTS: A total of 148 participants were randomized and 143 were treated: 107 with bezlotoxumab and 36 with placebo (cohort 1 n = 60, cohort 2 n = 83; median age 9.0 years); 52.4% of participants were male and 80.4% were white. Geometric mean ratios (90% CI) for bezlotoxumab AUC0-inf were 1.06 (0.95, 1.18) and 0.82 (0.75, 0.89) h * μg/mL for cohorts 1 and 2, respectively. Bezlotoxumab 10 mg/kg was generally well-tolerated with an adverse event profile similar to placebo, including no treatment discontinuations due to adverse events. CDI recurrence was low and comparable for bezlotoxumab (11.2%) and placebo (14.7%). CONCLUSIONS: The results of this study support the bezlotoxumab dose of 10 mg/kg for pediatric patients. TRIAL REGISTRATION: NCT03182907 at ClinicalTrials.gov.

Citace poskytuje Crossref.org

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