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Intensive Care Med ; 44(4): 438-448, 2018 04.
Artigo em Inglês | MEDLINE | ID: mdl-29632995

RESUMO

PURPOSE: The CIGMA study investigated a novel human polyclonal antibody preparation (trimodulin) containing ~ 23% immunoglobulin (Ig) M, ~ 21% IgA, and ~ 56% IgG as add-on therapy for patients with severe community-acquired pneumonia (sCAP). METHODS: In this double-blind, phase II study (NCT01420744), 160 patients with sCAP requiring invasive mechanical ventilation were randomized (1:1) to trimodulin (42 mg IgM/kg/day) or placebo for five consecutive days. Primary endpoint was ventilator-free days (VFDs). Secondary endpoints included 28-day all-cause and pneumonia-related mortality. Safety and tolerability were monitored. Exploratory post hoc analyses were performed in subsets stratified by baseline C-reactive protein (CRP; ≥ 70 mg/L) and/or IgM (≤ 0.8 g/L). RESULTS: Overall, there was no statistically significant difference in VFDs between trimodulin (mean 11.0, median 11 [n = 81]) and placebo (mean 9.6; median 8 [n = 79]; p = 0.173). Twenty-eight-day all-cause mortality was 22.2% vs. 27.8%, respectively (p = 0.465). Time to discharge from intensive care unit and mean duration of hospitalization were comparable between groups. Adverse-event incidences were comparable. Post hoc subset analyses, which included the majority of patients (58-78%), showed significant reductions in all-cause mortality (trimodulin vs. placebo) in patients with high CRP, low IgM, and high CRP/low IgM at baseline. CONCLUSIONS: No significant differences were found in VFDs and mortality between trimodulin and placebo groups. Post hoc analyses supported improved outcome regarding mortality with trimodulin in subsets of patients with elevated CRP, reduced IgM, or both. These findings warrant further investigation. TRIAL REGISTRATION: NCT01420744.


Assuntos
Infecções Comunitárias Adquiridas/terapia , Isotipos de Imunoglobulinas/uso terapêutico , Fatores Imunológicos/uso terapêutico , Pneumonia/terapia , Idoso , Idoso de 80 Anos ou mais , Antibacterianos/uso terapêutico , Terapia Combinada , Método Duplo-Cego , Feminino , Humanos , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Respiração Artificial , Resultado do Tratamento
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