Role of the Microbiota in the Evolution of the SARS-CoV-2 Disease,COVID-19, in Hospitalized Patients (MicrobioCOVID)
Role of the Microbiota in the Evolution of the SARS-CoV-2 Disease in Hospitalized Patients
Patients hospitalized for COVID-19 may need intensive care (e.g. mechanical ventilation) during hospitalization. Some risk factors are already known but better targeting of such patients is still needed, at least because existing risk factors are not strong enough to provide an accurate prediction. Care organization would benefit for such a predictive tool.
Oropharyngeal and gut microbiota could potentially fill a significant gap in predictive performances. The investigators therefore propose to sample 200 patients (oropharyngeal and rectal swab) admitted in infectious disease department at Bichat Hospital and at high risk of needing intensive care during hospitalization. The investigators plan to perform metagenomic sequencing and bioinformatic analysis of these samples to characterize the diversity of bacterial species present in the oropharynx and the gut and to identify new factors associated with the need for intensive care. Aside metagenomic analyses, The investigators will perform semi-quantitative cultures of the oropharyngeal and gut microbiota to identify and quantify pathogens in order to predict the risk of bacterial infections in COVD-19 patients.
For patients transferred in intensive care unit, The investigators will to perform another series of samples to better characterize the evolution of microbiota during mechanical ventilation and identify factors associated with the risk of developing a ventilator-associated pneumonia.
Microbiota data will be considered together with the host genotype, the viral sequence and a deep immunological profiling to identify the main determinants of the evolution toward severity of COVID-19.
Visão geral do estudo
Status
Condições
Descrição detalhada
Patients hospitalized for COVID-19 may need intensive care (e.g. mechanical ventilation) during hospitalization. Some risk factors are already known (e.g. sex, comorbidities, initial clinical presentation inflammatory cytokines), but better targeting of such patients is still needed, at least because existing risk factors are not strong enough to provide an accurate prediction. Care organization would benefit for such a predictive tool.
Oropharyngeal and gut microbiota could fill a significant gap in predictive performances. The investigators therefore propose to take advantage of the French-COVID cohort and sample 200 patients (oropharyngeal and rectal swab) admitted in infectious disease department at Bichat Hospital and at high risk of needing intensive care during hospitalization. The investigators plan to perform metagenomic sequencing and bioinformatic analysis of these samples to characterize the diversity of bacterial species present in the oropharynx and the gut and to identify new factors associated with the need for intensive care. Aside metagenomic analyses, The investigators will perform semi-quantitative cultures of the oropharyngeal and gut microbiota to identify and quantify pathogens in order to predict the risk of bacterial infections in COVD-19 patients.
The genetic determinants of the host (the patient) could also be predictive of the severity of the disease and so does the immunological response to the COVID-19. Likewise, it has been suggested that certain mutations (notably the D614G mutation) of the viral sequence could be associated with the infectivity of the virus.
In addition to the direct role of the microbiota in the course of infection, the immune characteristics specific to the host, by themselves or in interaction with the microbiota, could play an important role in the progression of the disease.
This project focuses on the clinical characterization of COVID-19 and its evolution, as well as disease management.
The research focuses on 4 main areas:
- Characterization of the oropharyngeal and intestinal microbiota of patients with COVID-19
- Characteristics of the host (genotype)
- Immune characteristics of the host
- Characteristics of the SARS-CoV-2 viral genome
For patients transferred in intensive care unit, The investigators will to perform another series of samples to better characterize the evolution of microbiota during mechanical ventilation and identify factors associated with the risk of developing a ventilator-associated pneumonia.
Tipo de estudo
Inscrição (Antecipado)
Contactos e Locais
Contato de estudo
- Nome: Etienne Ruppé
- Número de telefone: 33 1 40 25 80 00
- E-mail: etienne.ruppe@aphp.fr
Estude backup de contato
- Nome: Xavier Lescure
- Número de telefone: 33 1 40 25 80 00
- E-mail: xavier.lescure@aphp.fr
Locais de estudo
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Paris, França
- Recrutamento
- LESCURE
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Contato:
- xavier lescure
- E-mail: xavier.lescure@aphp.fr
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Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
Aceita Voluntários Saudáveis
Gêneros Elegíveis para o Estudo
Método de amostragem
População do estudo
Descrição
Inclusion Criteria:
- Adult patient with documented SARS-CoV-2 infection requiring hospitalization.
Exclusion Criteria:
- Lack of consent
- Patients hospitalized in an intensive care unit
- Patient under guardianship or curatorship
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
Coortes e Intervenções
Grupo / Coorte |
Intervenção / Tratamento |
|---|---|
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Patients hospitalized for COVID-19
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analysis of oropharyngeal and intestinal microbiota
analysis of a part of host genotype
analysis of host immune factors
analysis of viral sequence
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O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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Identify risk factors associated with severe forms of COVID-19 requiring transfer to ICU
Prazo: day 14
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The main endpoint is the indication of worsening of the general condition requiring transfer to ICU
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day 14
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Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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Link between the composition of the gut microbiota and admission to intensive care
Prazo: 3 months
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Composition of the gut microbiota on admission to intensive care to predict the outcome of severe COVID-19 in patients transferred to the ICU (subgroup analysis)
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3 months
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Predictive performance of semi-quantitative culture and rapid metagenomic evaluation
Prazo: 3 months
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Predictive performance of semi-quantitative culture and rapid metagenomic evaluation of the oropharyngeal microbiota to predict the occurrence of VAP in patients admitted to an ICU and mechanically ventilated (subgroup analysis).
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3 months
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Colaboradores e Investigadores
Patrocinador
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo (Real)
Conclusão Primária (Real)
Conclusão do estudo (Antecipado)
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Real)
Atualizações de registro de estudo
Última Atualização Postada (Real)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Termos MeSH relevantes adicionais
Outros números de identificação do estudo
- APHP201083
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