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NCT04630847Not yet recruitingPhase 1

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

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

Source: ClinicalTrials.gov · Last updated 18 Sept 2026

Brief summary (registry, in English)

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.

Status (registry)
Not yet recruiting
Phase (registry)
Phase 1
Study type
Interventional
Enrollment
10 (estimated)
First submitted
11 Nov 2020
Start date
May 2027
Primary completion date
Jul 2027
Lead sponsor
ProgenaBiome
Diseases
Autism
NCT number
NCT04630847

What you commit to

  • Study type: Interventional · Phase 1
  • Planned participants: 10
  • From May 2027 to the primary completion date, Jul 2027
  • 1 site in 1 country
  • Visits and tests: ask the trial team, the registry does not list them

Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.

Who cannot take part

Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.

Prior treatment

  • Subjects known to abuse alcohol or drugs.
  • 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).

Other illness

  • 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 diagnosed with cancer, except small localized basal cell carcinoma.
  • Infection with HIV.
  • Infection with Hepatitis B or C.
  • Allergy to benzodiazepine.
  • Hypersensitivity to vancomycin
  • Renal insufficiency

Other

  • 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.
  • Subjects unable to refrain from taking non-study antibiotics for the period of the study.
  • Subjects who have undergone gastric bypass or total colectomy, or who are scheduled for these procedures.
  • 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
  • Planned travel outside United States during study period.
  • Colitis

Who the study is looking for

  • 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)

Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (1)

Sites in registry order. Save your city in your profile to sort them by distance.

SiteCityCountrySite status
ProgenaBiome
Coordinator of this site? Confirm its status
VenturaUnited StatesUnknown status

This page is information, not medical advice. Discuss any trial with your doctor.