The Pediatric infectious disease journal · 2020
Daptomycin for Pediatric Gram-Positive Acute Hematogenous Osteomyelitis.
Клиническое исследование III фазыСравнительное исследованиеСтатьяМногоцентровое исследованиеРандомизированное исследованиеПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Bradley John S, Arrieta Antonio C, Digtyar Valeri A, Popejoy Myra W, Grandhi Anjana, Bokesch Paula, Hershberger Ellie, Dorr Mary Beth, Tan Christopher M, Murata Yoshihiko, Wolf Dominik J, Bensaci Mekki
Аннотация
BACKGROUND: We prospectively evaluated efficacy and safety of daptomycin versus active comparator in children with acute hematogenous osteomyelitis (AHO).
METHODS: Randomized, controlled, double-blind, global, multicenter, phase 3 trial. Patients 1-17 years of age with suspected/confirmed AHO requiring hospitalization and intravenous therapy were randomized 1:1 to intravenous daptomycin (once-daily, age-adjusted doses) or comparator (vancomycin, nafcillin or equivalent) ≥4 days, followed by oral therapy (14-42 days total). Primary endpoint: protocol-defined clinical improvement by Day 5 in the modified intention-to-treat (MITT) population (confirmed AHO, ≥1 dose of study treatment); differences between study arms were evaluated using a prespecified 15% noninferiority margin for daptomycin.
RESULTS: Seventy-three patients per arm received treatment. Pathogens were isolated from 62% of patients (83% methicillin-susceptible Staphylococcus aureus, 9% methicillin-resistant S. aureus [MRSA]). Clinical improvement by Day 5 was observed in 55/71 (78%) daptomycin- and 58/70 (83%) comparator-treated MITT patients (95% confidence interval [CI]: -19.4, 7.4). This difference was not statistically significant; however, daptomycin did not meet the prespecified 15% noninferiority margin, since the lower bound of the 95% CI extended below 15%. Overall, 82% of daptomycin and 87% of comparator patients achieved clinical cure at the test-of-cure visit (secondary endpoint). More comparator patients had treatment-emergent (63% vs. 46%) and treatment-related (18% vs. 7%) adverse events.
CONCLUSIONS: Differences between daptomycin and comparator for the primary endpoint were not statistically significant; however, prespecified noninferiority criteria for daptomycin were not met. With insufficient cases of confirmed MRSA, we could not evaluate daptomycin for MRSA AHO. Our nonvalidated protocol design yields valuable information for implementing future trials in AHO (ClinicalTrials.gov NCT01922011).
METHODS: Randomized, controlled, double-blind, global, multicenter, phase 3 trial. Patients 1-17 years of age with suspected/confirmed AHO requiring hospitalization and intravenous therapy were randomized 1:1 to intravenous daptomycin (once-daily, age-adjusted doses) or comparator (vancomycin, nafcillin or equivalent) ≥4 days, followed by oral therapy (14-42 days total). Primary endpoint: protocol-defined clinical improvement by Day 5 in the modified intention-to-treat (MITT) population (confirmed AHO, ≥1 dose of study treatment); differences between study arms were evaluated using a prespecified 15% noninferiority margin for daptomycin.
RESULTS: Seventy-three patients per arm received treatment. Pathogens were isolated from 62% of patients (83% methicillin-susceptible Staphylococcus aureus, 9% methicillin-resistant S. aureus [MRSA]). Clinical improvement by Day 5 was observed in 55/71 (78%) daptomycin- and 58/70 (83%) comparator-treated MITT patients (95% confidence interval [CI]: -19.4, 7.4). This difference was not statistically significant; however, daptomycin did not meet the prespecified 15% noninferiority margin, since the lower bound of the 95% CI extended below 15%. Overall, 82% of daptomycin and 87% of comparator patients achieved clinical cure at the test-of-cure visit (secondary endpoint). More comparator patients had treatment-emergent (63% vs. 46%) and treatment-related (18% vs. 7%) adverse events.
CONCLUSIONS: Differences between daptomycin and comparator for the primary endpoint were not statistically significant; however, prespecified noninferiority criteria for daptomycin were not met. With insufficient cases of confirmed MRSA, we could not evaluate daptomycin for MRSA AHO. Our nonvalidated protocol design yields valuable information for implementing future trials in AHO (ClinicalTrials.gov NCT01922011).