The Effect of a Multispecies Probiotics on Autism Symptoms and the Quality of Life in Children (PROBAUT)

Medical University of Warsaw

Status: Enrolling

Conditions: Autism Spectrum Disorder

Treatments: Dietary Supplement: Multispecies probiotics; Other: Placebo

Study type: Interventional

Funder types: Other; Industry

Identifiers

NCT06448767

KB/151/2023

Details and patient eligibility

About

In this trial, the investigators aim to evaluate the impact of a multispecies probiotic consisting of Bacillus subtilis W201, Bifidobacterium infantis W17, Bifidobacterium lactis W51, Lactobacillus acidophilus W37, Lactobacillus brevis W63, Lactobacillus rhamnosus W140, Lactococcus lactis W19, Propionibacterium freudenreichii W200, on the severity of autism symptoms and the quality of life in children with Autism Spectrum Disorder aged 7 to 15.

Full description

This study is a randomized, double-blind, placebo-controlled clinical trial. One hundred and eight children aged 7 to 15 years diagnosed with Autism Spectrum Didorder will be randomly assigned in a 1:1 ratio to receive either a multispecies probiotics or a placebo for 12 weeks. The probiotic mixture contains 5 x 10^9 colony forming units per dose consisting of Bacillus subtilis W201, Bifidobacterium infantis W17, Bifidobacterium lactis W51, Lactobacillus acidophilus W37, Lactobacillus brevis W63, Lactobacillus rhamnosus W140, Lactococcus lactis W19, Propionibacterium freudenreichii W200.

The two co-primary outcomes will be the assessment of core autism symptoms using the Autism Symptom Rating Scales (ASRS) and quality of life measured by the Quality of Life in Autism Part A questionnaire (QoLA-A). The secondary outcomes will include evaluations of sleep impairments using Children Sleep Habit Questionnaire - Abbreviated (CSHQ-A), parental stress levels using Parenting Stress Index-III (PSI-III), gastrointestinal symptoms using Gastrointestinal Symptom Rating Scale (GSRS), and urinary p-cresol levels. These outcomes will be assessed twice: at baseline and after 12 weeks of intervention.

Enrollment: 110 estimated patients

Sex: All

Ages: 7 to 15 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Diagnosis of ASD according to the Diagnostic and Statistical Manual of Mental Disorders, the fifth edition (DSM-5) or International Classification of Diseases, Tenth Revision (ICD-10).
2. Children either not taking any medication or receiving the same medication for the last 2 months.
3. Patients, or their parents/caregivers, are willing to provide written informed consent, proceed with nutritional supplements throughout the 3-month trial, refrain from starting any kind of special diet for the duration of the study, and complete the questionnaires at two time points during the study.

Exclusion criteria

1. Use of antibiotics in the previous 2 months before enrolling (excluding topical antibiotics).
2. Use of probiotics or synbiotics within the previous 2 months.
3. History of intolerance or allergy to probiotics, synbiotics or any other study product component.
4. Surgery with bowel resection or short bowel syndrome.
5. Children with severe immunodeficiency.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Quadruple Blind

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110 participants in 2 patient groups, including a placebo group

Multispecies probiotics group

Experimental group

Description:

55 participants

Treatment:

Dietary Supplement: Multispecies probiotics

Control group

Placebo Comparator group

Description:

55 participants

Treatment:

Other: Placebo