Last updated on February 2018

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


Brief description of study

This is a clinical trial of Microbiota Transplant Therapy (MTT) for adults with autism spectrum disorders (ASD) who have gastrointestinal problems.

Previous research has shown that individuals with ASD have a low diversity of gut bacteria, and low diversity is generally associated with poor gastrointestinal (GI) health. We previously found that MTT therapy for children with ASD and GI symptoms was helpful in reducing their GI symptoms, reducing their ASD symptoms, and increasing their diversity of gut bacteria.

This clinical trial will investigate the hypothesis that MTT therapy will be helpful for adults with ASD who have GI symptoms.

Detailed Study Description

For adults ages 18-60 years with ASD and gastrointestinal problems, the investigators propose a Phase 2 clinical trial to evaluate the safety and efficacy of MTT. The study will also determine if longer treatment is beneficial, and to conduct a longer observation after treatment stops to determine long-term safety and efficacy. The three parts of this trial are described below.

Part 1: Placebo-Controlled Treatment The trial will begin with a randomized, double-blind, placebo-controlled trial which will include a 2-week treatment with oral vancomycin (or placebo), then 1 day of Moviprep to cleanse the bowel of vancomycin and bacteria/feces (all participants, since its bowel-emptying effect cannot be blinded), followed by oral administration of Full Spectrum Microbiota (FSM) or placebo. An initial high dose of FSM (or placebo) for two days will be followed by a lower maintenance dose of FSM (or placebo) for 8 weeks.

Part 2 Extension and Cross-Over

  • For the treatment group from Part 1, there will be an 8-week extension of the maintenance dose, to determine if longer treatment has additional benefits.
  • For the placebo group from Part 1, they will receive MoviPrep, an initial high dose of FSM for 2 days, and then a lower dose of FSM for 8 weeks (similar to the treatment group in Part 1, but without the vancomycin). This will help us determine if pre-treatment with vancomycin is needed or not.

Part 3: Follow-up There will be follow-up evaluations at 6, 12, and 18 months after treatment is stopped, to assess long-term efficacy and possible adverse effects.

Clinical Study Identifier: NCT03408886

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Arizona State University

Tempe, AZ United States
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Recruitment Status: Open


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