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Te vroeg geboren baby's beschermen tegen luchtweginfecties en piepende ademhaling door bacteriële lysaten te gebruiken. (PROTEA)

23 september 2026 bijgewerkt door: Gerdien Tramper, Franciscus Gasthuis

Bescherming van late tot matige premature baby's tegen luchtweginfecties en piepende ademhaling in hun eerste levensjaar door bacteriële lysaten te gebruiken.

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.

Studie Overzicht

Toestand

Werving

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

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.

Studietype

Ingrijpend

Inschrijving (Geschat)

500

Fase

  • Fase 3

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

Studie Locaties

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

1 maand tot 2 maanden (Kind)

Accepteert gezonde vrijwilligers

Nee

Geslachten die in aanmerking komen voor studie

Allemaal

Beschrijving

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.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Preventie
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Verviervoudigen

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Actieve vergelijker: 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.

Andere namen:
  • OM-85
  • Broncho-Vaxom-concentraat (bacterieel lysaat)
Placebo-vergelijker: 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.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Total number of physician diagnosed lower RTI and wheezing episodes in the first year of life
Tijdsspanne: In the first year of life.

Recorded by frequent questionnaires

In the first year of life.

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Time to first lower RTI or wheezing episode
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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)
Tijdsspanne: 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)
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: At age 12 months

Total IgE and house dust mite specific IgE

At age 12 months
Infant vaccination titers at 12 months
Tijdsspanne: At age 12 months

Vaccination titers of haemohilus influenza type B, pneumococci, tetanus

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

Estimated from information from standardized questionnaires

In the first and second year of life.

Andere uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Gut and respiratory microbiome composition
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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)
Tijdsspanne: 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
Tijdsspanne: At age 12 months

Performed on blood drawn at age 12 months

At age 12 months
Whole blood stimulation essays
Tijdsspanne: 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
Tijdsspanne: In the first year of life.

From combined microbial and immunological data

In the first year of life.

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Medewerkers

Publicaties en nuttige links

De persoon die verantwoordelijk is voor het invoeren van informatie over het onderzoek stelt deze publicaties vrijwillig ter beschikking. Dit kan gaan over alles wat met het onderzoek te maken heeft.

Algemene publicaties

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Werkelijk)

18 maart 2022

Primaire voltooiing (Geschat)

1 december 2029

Studie voltooiing (Geschat)

1 december 2030

Studieregistratiedata

Eerst ingediend

24 augustus 2021

Eerst ingediend dat voldeed aan de QC-criteria

20 september 2021

Eerst geplaatst (Werkelijk)

30 september 2021

Updates van studierecords

Laatste update geplaatst (Werkelijk)

25 september 2026

Laatste update ingediend die voldeed aan QC-criteria

23 september 2026

Laatst geverifieerd

1 september 2026

Meer informatie

Termen gerelateerd aan deze studie

Andere studie-ID-nummers

  • NL76165.100.20

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

JA

Beschrijving IPD-plan

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.

IPD-tijdsbestek voor delen

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

IPD-toegangscriteria voor delen

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.

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .