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Trial · NCT03408886

Microbiota Transfer Therapy for Adults With Autism Spectrum Disorder (ASD) Who Have Gastrointestinal Disorders

NCT03408886, Phase 2, Active not recruiting, Arizona State University

3 sourcestrials-2026-11-12-0.5.0

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ConductScience Library. Microbiota Transfer Therapy for Adults With Autism Spectrum Disorder (ASD) Who Have Gastrointestinal Disorders. Trials, record NCT03408886. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT03408886

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Trial

As registered on ClinicalTrials.gov, in the graph's capture of the registry.

Title
Microbiota Transfer Therapy for Adults With Autism Spectrum Disorder (ASD) Who Have Gastrointestinal Disorders
NCT number
NCT03408886
Status
Active not recruiting
Phases
Phase 2
Enrollment
55 participants, actual
Lead sponsor
Arizona State University
Conditions
Autism Spectrum Disorder, Gastrointestinal Disorder
Interventions
Vancomycin, MoviPrep, Full Spectrum Microbiota
First posted
2018-01-24
Last updated
2023-01-09

Source ClinicalTrials.gov

Registered outcomes9

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
PrimaryChange in Childhood Autism Rating Scale (CARS) from baseline to 10 weeksbaseline; month 2.5, 4.5, 10.5, 16.5, 22.5An evaluation by a trained evaluator of autism symptoms. The range is 15-60, and scores in the range of 27-30 or higher are indicative of autism.
SecondaryChange in Daily Stool Log (DSL) from baseline to 10 weeksbaseline for 2 weeks; daily for 18 weeks, and 2 weeks at month 10, 16, 22
The DSL is a report of the number and type of stools over 14 days. Each stool is rated on a scale of 1-7, where 1=very hard, 4=normal, 7=very soft/liquid. The DSL is scored by the number of days of an abnormal stool (type 1-2 or 6-7) or no stool.
SecondaryChange in Social Responsiveness Scale - 2 from baseline to 10 weeks of treatmentbaseline; weeks 2, 4, 6, 8, 10, 12, 14, 16, 18; months 10.5, 16.5, 22.5A questionnaire about social skills, where higher scores suggest more severe autism. Scores range from 0 to 195, with higher scores indicating more severe problems.
SecondaryChange in Aberrant Behavior Checklist from baseline to 10 weeksbaseline; month 2.5, 4.5, 10.5, 16.5, 22.5a questionnaire about aberrant behaviors. Scores range from 0 to 174, with higher scores indicating more severe behaviors
OtherChange in Gastrointestinal Stool and Symptom Questionnaire for Autism, from baseline to 10 weeksbaseline; weeks 2, 4, 6, 8, 10, 12, 14, 16, 18; month 10.5, 16.5, 22.5a questionnaire about GI-related symptoms.
OtherChange in Microbiome composition from baseline to 10 weeksbaseline; month 1, 2.5, 3.5, 4.5, 10.5, 16.5, 22.5analysis of the bacterial composition of stool samples, at the species, genus, and phylum level
OtherChange in the Vineland Adaptive Behavior Scale - II, from baseline to 10 weeksbaseline; month 2.5, 4.5, 22.5questionnaire about adaptive behaviors; it yields the developmental age of the participant
OtherChange in Ohio State University Clinical Impressions Scale, from baseline 10 weeksbaseline; month 2.5, 4.5assessment of autism symptoms by a clinician. It rates 10 symptoms on a scale of 1-7, with higher scores indicating worse symptoms.
OtherChange in Parent Global Impressions, from baseline to 10 weeksbaseline; weeks 2, 4, 6, 8, 10, 12, 14, 16, 18; month 10.5, 16.5, 22.5Assessment of autism symptoms. It rates 20 symptoms on a scale of 1-7, with higher scores indicating worse symptoms

Outcomes0

Each outcome the trial posted results for, in ClinicalTrials.gov's words.

None in this release.

Results by group0

Each measurement the trial posted, group by group, in the words and numbers it posted.

None in this release.

Participant flow0

How many started, completed or left each group, period by period.

None in this release.

Adverse events0

Each adverse event the trial posted, group by group: the participants affected out of those at risk.

None in this release.

Adverse event totals0

The totals the trial posted for each group.

None in this release.

Papers1

The papers the trial lists on ClinicalTrials.gov.

PMIDListed as
28122648BACKGROUND

Source PubMed

Grants0

The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.

None in this release.

Trial comparisons0

Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.

None in this release.

Tests0

The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.

None in this release.

Data dates

The day each source was copied for this release.

ClinicalTrials.gov
2026-11-12
ClinicalTrials.gov
Results, from AACT
2026-03-23
AACT
NIH grant links
2026-11-13
NIH RePORTER

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

For software

Read this trial from software.

The record and each of its lists are JSON, twenty rows a page. No key.

GET https://conductscience.org/api/trials/v1/NCT03408886

GET https://conductscience.org/api/trials/v1/NCT03408886/registered