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Protección de los bebés prematuros de infecciones del tracto respiratorio y sibilancias mediante el uso de lisados ​​bacterianos. (PROTEA)

23 de septiembre de 2026 actualizado por: Gerdien Tramper, Franciscus Gasthuis

Protección de bebés prematuros tardíos a moderados de infecciones del tracto respiratorio y sibilancias en su primer año de vida mediante el uso de lisados ​​bacterianos.

The primary objective of this study is to reduce respiratory tract infections and wheezing in moderate-late preterms in the first years of life by bacterial lysate administration. Next to determine the correlation of biological markers with respiratory symptoms, immune protection and treatment effect.

Descripción general del estudio

Estado

Reclutamiento

Condiciones

Intervención / Tratamiento

Descripción detallada

This is a randomised placebo-controlled trial including 500 otherwise healthy moderate-late preterm infants. Participants will receive bacterial lysate (OM-85/Broncho-Vaxom, 3,5mg) or placebo powder for ten days each month, from 6-10 weeks after birth until 12 months after birth. At 12 months, parents of participants are asked to join in Protea-2. If they do, participants in the treatment arm of year 1 are randomised again over placebo and OM-85 and treated until the age of 24 months. Clinical data will be continuously collected by e-Health and 3 (possibly digital) study visits; with optional biological sampling and lung function at baseline, 6 and 12 months.

Main study parameters are doctor diagnosed lower RTI and wheezing episodes in the first year of life. Biological sampling will allow investigation of immune maturation, as well as microbiome development in the respiratory tract and gut. Also, biomarkers for risk-group selection and/or treatment success will be examined.

Tipo de estudio

Intervencionista

Inscripción (Estimado)

500

Fase

  • Fase 3

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Estudio Contacto

Ubicaciones de estudio

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

1 mes a 2 meses (Niño)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Todos

Descripción

Inclusion Criteria:

  • Gestational age at delivery between 30+0 and 35+6 weeks
  • Postnatal age at least 6 weeks at randomization & postmenstrual age at least 37 weeks
  • Written informed consent by both parents or formal caregivers

Exclusion Criteria:

  • Underlying other severe respiratory disease such as broncho-pulmonary dysplasia (unexpected in this group); hemodynamic significant cardiac disease; immunodefi-ciency; severe failure to thrive; birth asphyxia with predicted poor neurological out-come; syndrome or serious congenital disorder.
  • Maternal TNF-alpha inhibitors or other immunosuppression during pregnancy and/or breastfeeding
  • Parents unable to speak and read Dutch/English language
  • Known allergic hypersensitivity to the active ingredients/substance or to any of the excipients.

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Prevención
  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación paralela
  • Enmascaramiento: Cuadruplicar

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Comparador activo: Broncho-Vaxom treatment

Infants in this arm will be given 3,5mg bacterial lysate (OM-85) 10 days per month from 6 weeks after birth until 12 months of age.

At age 12 months they will be (if informed consent for Protea-2 is provided) randomised over Broncho-Vaxom treatment and placebo again.

Broncho-Vaxom is a bacterial extract comprising lyophilised fractions of 21 different inactivated bacterial strains, which are frequently causing RTI.

Otros nombres:
  • OM-85
  • Broncho-Vaxom concentrado (lisado bacteriano)
Comparador de placebos: Placebo

Infants in this arm will be given a placebo powder from a capsule that will be indistinguishable from the active study drug.

Placebo powder from a capsule will be given, which will be indistinguishable from the active study drug.

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Total number of physician diagnosed lower RTI and wheezing episodes in the first year of life
Periodo de tiempo: In the first year of life.

Recorded by frequent questionnaires

In the first year of life.

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Time to first lower RTI or wheezing episode
Periodo de tiempo: In the first and second year of life.

Recorded by short weekly questionnaires (which will be filled in during the first year of life) and more extensive questionnaires every six months in the first and second year of life.

In the first and second year of life.
Total number of RTI
Periodo de tiempo: In the first and second year of life.

Recorded by short weekly questionnaires (which will be filled in during the first year of life) and more extensive questionnaires every six months in the first and second year of life.

In the first and second year of life.
Total number of wheezing episodes
Periodo de tiempo: In the first and second year of life.

Recorded by short weekly questionnaires (which will be filled in during the first year of life) and more extensive questionnaires every six months in the first and second year of life.

In the first and second year of life.
Distribution of viruses
Periodo de tiempo: In the first year of life.

Viruses present in the nasofarynx during complaints of lower respiratory tract infection or wheezing. Nasofaryngeal swabs will be taken in case of complaints during the first year of life. In the second year of life this will not be done.

In the first year of life.
Medication use (bronchodilators, corticosteroids, antibiotics)
Periodo de tiempo: In the first and second year of life.

Recorded by short weekly questionnaires (which will be filled in during the first year of life) and more extensive questionnaires every six months in the first and second year of life.

In the first and second year of life.
Lung function as measured by expiratory variability index (Ventica)
Periodo de tiempo: In the first year of life.

Measured at age 6-10 weeks (baseline), 6 months and 12 months in a subset of participants.

In the first year of life.
Quality of life questionnaires
Periodo de tiempo: In the first and second year of life.

Recorded by extensive questionnaires every six months in the first and second year of life.

In the first and second year of life.
(serious) adverse events
Periodo de tiempo: In the first year of life.

Will be reported by parents immediately. Respiratory episodes are not regarded as an (S)AE since these episodes comprise primary and secondary outcomes. (S)AE's are only expected in the first year of life because the treatment stops at the age of 12 months.

In the first year of life.
Serum specific IgE (allergen sensitization) at 12 months
Periodo de tiempo: At age 12 months

Total IgE and house dust mite specific IgE

At age 12 months
Infant vaccination titers at 12 months
Periodo de tiempo: At age 12 months

Vaccination titers of haemohilus influenza type B, pneumococci, tetanus

At age 12 months
Costs- and cost-effectiveness
Periodo de tiempo: In the first and second year of life.

Estimated from information from standardized questionnaires

In the first and second year of life.

Otras medidas de resultado

Medida de resultado
Medida Descripción
Periodo de tiempo
Gut and respiratory microbiome composition
Periodo de tiempo: In the first year of life.

Measured from faeces and nasofaryngeal swabs taken at age 6-10 weeks, 6 months and 12 months.

In the first year of life.
Secretory IgA in saliva or nasal lining fluid
Periodo de tiempo: In the first year of life

Saliva will be collected at age 6-10 weeks, 6 months and 12 months.

In the first year of life
Immune maturation: immune cells in nasal epithelium
Periodo de tiempo: In the first year of life

Collected by nasal scraping at age 6-10 weeks, 6 months and 12 months. Analysed using masscytometry.

In the first year of life
Immune maturation: chemokines and cytokines in nasal lining fluid
Periodo de tiempo: In the first year of life

Collected by nasosorption at age 6-10 weeks, 6 months and 12 months. Analysed using Luminex cyto/chemokine assay.

In the first year of life
Immune maturation: immune cells in bloodsamples
Periodo de tiempo: In the first year of life

Collected by blooddraws at age 6-10 weeks, 6 months and 12 months. Analysed using masscytometry.

In the first year of life
Serum IgE (total and specific to house dust mite)
Periodo de tiempo: At age 12 months

Measured in blood samples which will be drawn at age 12 months

At age 12 months
Immune maturation: Single cell transcriptomics
Periodo de tiempo: At age 12 months

Performed on blood drawn at age 12 months

At age 12 months
Whole blood stimulation essays
Periodo de tiempo: At age 12 months

Performed on blood drawn at age 12 months

At age 12 months
Biomarkers predictive of high morbidity and/or treatment success
Periodo de tiempo: In the first year of life.

From combined microbial and immunological data

In the first year of life.

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Publicaciones y enlaces útiles

La persona responsable de ingresar información sobre el estudio proporciona voluntariamente estas publicaciones. Estos pueden ser sobre cualquier cosa relacionada con el estudio.

Publicaciones Generales

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Actual)

18 de marzo de 2022

Finalización primaria (Estimado)

1 de diciembre de 2029

Finalización del estudio (Estimado)

1 de diciembre de 2030

Fechas de registro del estudio

Enviado por primera vez

24 de agosto de 2021

Primero enviado que cumplió con los criterios de control de calidad

20 de septiembre de 2021

Publicado por primera vez (Actual)

30 de septiembre de 2021

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

25 de septiembre de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

23 de septiembre de 2026

Última verificación

1 de septiembre de 2026

Más información

Términos relacionados con este estudio

Plan de datos de participantes individuales (IPD)

¿Planea compartir datos de participantes individuales (IPD)?

SÍ

Descripción del plan IPD

Researchdata will be shared in data repositories according to the FAIR principle. Clinical data about respiratory health will be shared in the DANS repository. Inlcuding metadata which will ensure reusability. Sequencing data will be shared online in the ENA repository which will provide an unique global identifier. All used bioinformatics pipelines for data analysis will be made accessible on a GitHub account. Immunological data will be shared in NCBI Gene Expression omnibus and ImmPort. Used analysis pipelines for the transcriptomics data will also be tracked and can be shared using a Github account.

All data shared will be pneudonymized.

Marco de tiempo para compartir IPD

Data will come available after publication of the data in articles by initating researchers.

Criterios de acceso compartido de IPD

Data will be available under restricted access. A request for data sharing will include at least the reason for request (for what will the receiver use the data?) and agreements about authorship.

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

No

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

No

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

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