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OM-85 in Paediatric Recurrent Respiratory Tract Infections With Wheezing Lower Respiratory Illness

A Randomised, Placebo-Controlled, 3-Arm, Double-Blind, Multicentre, Phase 4 Study to Assess the Efficacy of OM-85 (Broncho-Vaxom) Short- and Long-Term Treatment vs. Placebo in the Prevention of Respiratory Tract Infections in Children Aged Between 6 Months and 5 Years With Wheezing Lower Respiratory Illness

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05677763
Enrollment
525
Registered
2023-01-10
Start date
2022-12-12
Completion date
2026-09-16
Last updated
2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Respiratory Tract Infections, Wheezing Lower Respiratory Illness

Brief summary

This study will assess the efficacy and safety of OM-85 compared to placebo in reducing the number of respiratory tract infections (RTIs) in children aged between 6 months and 5 years.

Detailed description

This is a Phase 4, randomised, double-blind, placebo-controlled study to assess the efficacy and safety of short- and long-term treatment with OM-85. The study will consist of screening (up to 20 days before randomisation), Treatment period of 12 months, and an Observational period of 6 months. The subjects will be randomised in a ratio of 1:1:1 ratio to receive either OM-85 for 12 consecutive months (BV-12 arm), or OM-85 for 3 consecutive months followed by matching placebo for 9 consecutive months (BV-3 arm), or placebo for 12 consecutive months (Placebo arm). The expected duration of subject participation is 18 months (+20 days).

Interventions

DRUGOM-85

Subjects will be administered OM-85 3.5 mg capsules by mouth once daily. (10 days per month)

DRUGPlacebo

Subjects will be administered Placebo once daily. (10 days per month)

Sponsors

OM Pharma SA
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
6 Months to 5 Years
Healthy volunteers
No

Inclusion criteria

* Children of either gender aged between 6 months and 5 years, at Baseline/Randomisation (Visit 2) inclusive. * For children ≥1 year of age, ≥4 RTIs (as reported by parents or LAR of subject), including ≥2 episodes of wLRIs (including ≥1 triggering hospitalisation or medical visit) within 12 months prior to enrolment. OR * For children \<1 year of age, ≥2 RTIs (as reported by parents or LAR of subject), including ≥1 episode of wLRIs (including ≥1 triggering hospitalisation or medical visit) within 6 months prior to enrolment. * Parents or LAR of subject have provided the appropriate written informed consent. Written informed consent must be provided before any study-specific procedures are performed including screening procedures.

Exclusion criteria

* Anatomic alterations of the respiratory tract. * Other chronic respiratory diseases (e.g., tuberculosis, cystic fibrosis). * Any autoimmune disease. * HIV infection or any type of congenital or iatrogenic immune deficiency (including IgA deficiency). * Known severe congenital heart disease. * Haematologic diseases. * Liver or kidney failure. * New-borns before 34 weeks of gestational age. * Malnutrition as per World Health Organization (WHO) definition. * Any known neoplasia or malignancy. * Treatment with the following medications: 1. Injection or oral administration of steroids within 4 weeks prior to study enrolment. 2. Previous and/or concomitant immunosuppressants, immunostimulants, or gamma globulins within 6 months prior to study enrolment. * Previous use within last 6 months of enrolment or ongoing use of bacterial lysates. * Any major surgery within the last 3 months prior to study enrolment. * Known allergy or previous intolerance to investigational medicinal products (IMP). * Any other clinical conditions, that in the opinion of the Investigator, would not allow safe completion of the clinical study. * Other household members have previously been randomised in this clinical study. * Subjects' families expected to relocate out of study area within 24 months of the initiation of the study. * Currently enrolled in or has completed any other investigational device or drug study or receiving other investigational agent(s) within \<30 days prior to screening. * Parents or legally acceptable representative (LAR) who do not have access to internet connection. * Wheezing documented to be caused by gastroesophageal reflux.

Design outcomes

Primary

MeasureTime frameDescription
Rate of respiratory tract infections (RTIs)12 MonthsThe number of RTIs experienced by a subject during the Treatment period will be assessed.

Secondary

MeasureTime frameDescription
Rate of wheezing lower respiratory infections (wLRIs) experienced by a subject12 MonthsThe number of wLRIs experienced by a subject during the Treatment period will be assessed. This is the key secondary endpoint
Rate of wLRIs18 MonthsThe number of wLRIs experienced by a subject during the Treatment period, during the Observational period, and during the whole study period will be assessed.
Rate of respiratory tract infections (RTIs)18 MonthsThe number of RTIs experienced by a subject during the Treatment period, during the Observational period, and during the whole study period will be assessed.
Proportion of subjects with recurrent RTIs18 MonthsThe proportion of subjects experiencing ≥3 RTIs during the first 6 months of Treatment period, the proportion of subjects experiencing ≥4 RTIs during the full 12-month Treatment period and the proportion of subjects experiencing ≥6 RTIs during the full 12-month Treatment period and during the whole study period will be assessed.
Proportion of subjects with wLRIs18 MonthsThe proportion of subjects with wLRIs during the Treatment period, during the Observational period, and during the whole study period will be assessed.
Rate of severe wheezing lower respiratory illness (SwLRIs)18 MonthsThe number of SwLRIs experienced by a subject during the Treatment period, during the Observational period, and during the whole study period will be assessed.
Proportion of subjects with SwLRIs18 MonthsThe proportion of subjects with SwLRIs during the Treatment period, during the Observational period, and during the whole study period will be assessed.
Time to first, second and third RTI and wLRI18 MonthsTime to first, second and third RTI and wLRI during the whole study period will be assessed.
Mean duration in days per RTI and acute RTI18 MonthsMean duration in days per RTI and mean duration in days per acute RTI during the Treatment period, during the Observational period, and during the whole study period will be assessed.
Mean duration in days per wLRI18 MonthsMean duration in days per wLRI during the Treatment period, during the Observational period, and during the whole study period will be assessed.
Mean duration in days per SwLRI18 monthsMean duration in days per SwLRI during the Treatment period, during the Observational period, and during the whole study period will be assessed.
Number of healthcare resource utilisations18 MonthsNumber of healthcare resource utilisations (inpatient hospitalisations, visits to emergency rooms, or to a physician/health care provider) due to an RTI and/or a wLRI during the Treatment period, during the Observational period, and during the whole study period will be assessed.
Number of absent days from daycare18 MonthsNumber of absent days from daycare due to an RTI and/or a wLRI during the Treatment period, during the Observational period, and during the whole study period will be assessed.
Number of antibiotic treatments for a respiratory event18 MonthsNumber of antibiotic treatments for a respiratory event during the Treatment period, during the Observational period, and during the whole study period will be assessed.
Duration of antibiotic treatments for a respiratory event18 MonthsDuration of antibiotic treatments for a respiratory event during the Treatment period, during the Observational period, and during the whole study period will be assessed.
Number of systemic corticosteroids, inhaled corticosteroids (ICS) and β2-agonist treatments for a wLRI18 MonthsNumber of systemic corticosteroids, ICS and β2-agonist treatments for a wLRI during the Treatment period, during the Observational period, and during the whole study period will be assessed.
Duration of systemic corticosteroids, ICS and β2-agonist treatments for a wLRI18 MonthsDuration of systemic corticosteroids, ICS and β2-agonist treatments for a wLRI during the Treatment period, during the Observational period, and during the whole study period will be assessed.
Symptom duration as per the adapted Wisconsin Upper Respiratory Symptom Survey for Kids (WURSS-K) questionnaire18 MonthsSymptom duration during the Treatment period, during the Observational period, and during the whole study period will be assessed using WURSS-K questionnaire. Adapted WURSS-K is a valid and reliable illness-specific quality of life instrument that evaluates the impacts of RTIs on children.
Symptom types as per the adapted WURSS-K questionnaire18 MonthsSymptom types during the Treatment period, during the Observational period, and during the whole study period will be assessed using WURSS-K questionnaire. Adapted WURSS is a valid and reliable illness-specific quality of life instrument that evaluates the impacts of RTIs on children.
Symptom severity as per the adapted WURSS-K questionnaire18 MonthsSymptom severity during the Treatment period, during the Observational period, and during the whole study period will be assessed using WURSS-K questionnaire. Adapted WURSS is a valid and reliable illness-specific quality of life instrument that evaluates the impacts of RTIs on children.
Proportion of subjects who have not used antibiotics as rescue medication for RTI18 MonthsThe proportion of subjects who have not used antibiotics as rescue medication for RTI during the Treatment period, during the Observational period, and during the whole study period will be assessed.
Proportion of subjects who have not been hospitalised for an RTI18 MonthsThe proportion of subjects who have not been hospitalised for an RTI during the Treatment period, during the Observational period, and during the whole study period will be assessed.
Proportion of subjects who have not been administered a systemic corticosteroid for wLRI18 MonthsThe proportion of subjects who have not been administered a systemic corticosteroid for wLRI during the Treatment period, during the Observational period, and during the whole study period will be assessed.
Proportion of subjects who have not been hospitalised for more than 1 day for wLRI18 MonthsThe proportion of subjects who have not been hospitalised for more than 1 day for wLRI during the Treatment period, during the Observational period, and during the whole study period will be assessed.

Countries

Germany, Hungary, Italy, Poland, Switzerland, United Kingdom

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 4, 2026