Evaluating synbiotic treatment for anxiety in children with autism

Synbiotic Treatment for Neuropsychiatric Symptom of Autism Spectrum Disorder: an Open-label Pilot Study

Not applicable Interventional Chinese University of Hong Kong · NCT06126185

This study is testing if a new treatment using synbiotics can help reduce anxiety in children with autism who are under 12 years old.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment30 (estimated)
Ages2 Years to 12 Years
SexAll
SponsorChinese University of Hong Kong Academic / other
Locations1 site (Hong Kong)
Trial IDNCT06126185 on ClinicalTrials.gov

What this trial studies

This pilot study aims to assess the feasibility, tolerability, and preliminary efficacy of a 12-week synbiotic treatment in improving anxiety symptoms among children diagnosed with Autism Spectrum Disorder (ASD). The study will recruit 30 children under 12 years of age from a regional psychiatric clinic, focusing on those with elevated anxiety levels and sensory hyperresponsiveness. Participants will undergo a course of synbiotic, with outcomes measured through standardized questionnaires and analysis of fecal microbiome changes at weeks 6 and 12.

Who should consider this trial

Good fit: Ideal candidates are Chinese children under 12 years old diagnosed with ASD and exhibiting elevated anxiety levels.

Not a fit: Patients with co-occurring severe mental illnesses or significant physical health issues may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a novel approach to alleviating anxiety symptoms in children with autism, potentially improving their overall quality of life.

How similar studies have performed: While the approach of using synbiotics for anxiety in ASD is relatively novel, emerging evidence suggests potential benefits from gut microbiota interventions in related conditions.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. ASD children of Chinese ethnicity aged \<12 with diagnosis made by child psychiatrists based on Diagnostic and Statistical Manual, Fifth Edition (DSM-5) diagnostic criteria.
2. Elevated anxiety level, as measured by Anxiety Scale for Children-Autism Spectrum Disorder (ASC-ASD)
3. Presence of sensory hyperresponsiveness, as measured by Sensory Experience Questionnaire (SEQ)

Exclusion Criteria:

1. Co-occurring mental retardation, neurological, psychosis, depression or other severe mental illness.
2. History of non-functional gastrointestinal disorders such as inflammatory bowel disease and Hirschsprung's disease.
3. Presence of other significant physical illness, including but not limited to: current active malignancy, immunosuppression, organ failure and epilepsy
4. Exposure to antibiotics within 1 months of the study or history of using probiotics.
5. On special diet such as being a vegetarian

Where this trial is running

Hong Kong

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Autism Spectrum DisorderAnxietysynbioticprobioticprebiotic
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.