Skip to main content
OpenTrials
Not Yet Recruiting

NCT Number: NCT04630847

Familial Fecal Microbiota Transplant for the Treatment of Subjects With Autism Spectrum Disorders

This is an open-label clinical trial to evaluate the benefits of familial fecal microbiota transplant following a 6-week treatment with Vancomycin in adult subjects with ASD for treatment of social deficits and language delays.

Not Yet Recruiting

Trial opening soon.

Get Notified

Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Primary location

About this study

This is an open-label clinical trial to evaluate the benefits of familial fecal microbiota transplant following a 6-week treatment with Vancomycin in adult subjects with ASD for treatment of social deficits and language delays. Participants are given FMT by colonoscopy

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Subject at least six years of age.
  • Subject has confirmed diagnosis of ASD based on the DSM-V.
  • Subject with ASD whose parents/caregiver/guardian/LAR can complete informed consent process.
  • A reliable parent or caregiver who can report the side effects and communicate effectively with the research team.
  • Comorbid gastrointestinal symptoms
  • Stable medications during the two months prior to enrollment.
  • Currently receiving interventions in the community or school for ASD.
  • If female and of childbearing potential, must be willing to utilize at least one highly effective method of birth control for the duration of the study. This includes oral birth control pills, contraceptive implants, and intra-uterine devices. Diaphragms and condoms are not considered highly effective. Subjects not of reproductive potential will be exempt (e.g., post-menopausal, surgically sterilized)
  • If male, and partner is of childbearing potential, must be willing to utilize at least one highly effective method of birth control for the duration of the study. This includes oral birth control pills, contraceptive implants, and intra-uterine devices Diaphragms and condoms are not considered highly effective. Subjects not of reproductive potential will be exempt (surgically sterilized)

Exclusion criteria

  • Female subjects who are pregnant, nursing, or intend to become pregnant during the study period.
  • Subjects whose caregivers are unable/unwilling to cooperate with the protocol requirements.
  • Subject will be excluded who are suffering with Rett syndrome and Childhood Disintegrative Disorder.
  • Other serious co-morbid medical disorders affecting brain function and behavior, including uncontrolled seizures.
  • Subjects unable to refrain from taking non-study antibiotics for the period of the study.
  • Subjects diagnosed with cancer, except small localized basal cell carcinoma.
  • Subjects known to abuse alcohol or drugs.
  • Subjects who have undergone gastric bypass or total colectomy, or who are scheduled for these procedures.
  • Infection with HIV.
  • Infection with Hepatitis B or C.
  • Allergy to benzodiazepine.
  • Inability to stop loperamide, diphenoxylatye/atropine, or cholestyramine before the study
  • Unable to stop opiate treatment unless on a stable dose including PRN dosing, and no dose increase planned for the duration of the study
  • Known positive stool cultures for enteropathogens including, but not limited to Shigella, Salmonella, and Campylobacter within 30 days before enrollment. (These infection agents should be treated in advance of participation in this FMT study because they affect the good flora).
  • Known stool studies positive for ova and/or parasites in 30 days prior to enrollment. (Same as above).
  • Planned travel outside United States during study period.
  • Hypersensitivity to vancomycin
  • Renal insufficiency
  • Colitis

Treatment and study plan

Fecal Microbiota Transplant

Biological

FMT utilizing stool from first degree relatives

Primary outcomes

  1. ATEC

    Time frame: 52 Weeks

    Number of participants with changes in the Autism Treatment Evaluation Checklist scores

  2. QoLA

    Time frame: 52 Weeks

    Number of participants with changes in Quality of Life Autism scores

  3. CARS-2

    Time frame: 52 Weeks

    Number of participants with changes in Childhood Autism Rating Scale 2 scores

  4. SRS-2

    Time frame: 52 weeks

    Number of patients with changes in SRS-2 scores

  5. Behavioral changes

    Time frame: 52 weeks

    Changes in reported incidence of disturbances in non-core aspects of behavior or function

  6. GSRS

    Time frame: 52 weeks

    Number of patients with reported changes in GSRS measure of GI disturbances

  7. abbrvCDAI

    Time frame: 52 weeks

    Number of patients with changes in abbrevCDAI scores

  8. HSPP

    Time frame: 52 weeks

    Number of subjects with changes in quality of life metric HSPP

Secondary outcomes

  1. Shannon Diversity Index

    Time frame: 52 Weeks

    Changes in Shannon Diversity index compared between pre and post FMT scores

  2. Microbiome changes

    Time frame: 52 weeks

    Number of subjects with changes to microbiome relative abundance and composition

Other outcomes

  1. Adverse Events

    Time frame: 52 Weeks

    Number of participants with grade III or higher adverse events

  2. Serious Adverse Events

    Time frame: 52 Weeks

    Number of participants with serous adverse events

Study contacts

Contact information is provided by the study sponsor or research team.

Jordan Daniels, MS

CONTACT

[email protected]

18053390549

Sabine Hazan, MD

CONTACT

[email protected]

18053390549

Sponsors and collaborators

Lead sponsor

ProgenaBiome

Other

Collaborators

  • Microbiome Research Foundation
  • Ventura Clinical Trials

Registry information

Official study title

An Open-Label Phase I Clinical Trial of Vancomycin Followed by Familial Fecal Microbiota Transplant in Adult Subjects With Autism Spectrum Disorder (ASD)

Important dates

Study start
2025
Primary completion
2026
Study completion
2027
First posted
Nov 16, 2020
Registry last updated
Sep 23, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.