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ClinicalTrials.gov 1 recruiting now early-phase tilt

Autism Spectrum Disorders: early-phase trial registry

1 of 21 indexed Autism Spectrum Disorders trials are currently recruiting, with more weight in Phase 1-2.

Corpus placement: #797 of 28,707 conditions by registered trial count.

21 US clinical trials · 1 currently recruiting · #797 of 28,707 conditions by registered trial count

Autism Spectrum Disorders: 21 US clinical trials tracked, 1 recruiting.

Autism Spectrum Disorders is the subject of 21 registered US clinical trials on ClinicalTrials.gov, 1 of them currently open to new participants. 0 are in Phase 3-4 (later-stage) and 8 in Phase 1-2 (earlier-stage). The most active sponsor is Massachusetts General Hospital, running 3 of these trials.

Enrollment posture brief

Registry condition autism-spectrum-disorders

OPEN 1 | RECR 5% | LATE 0 | EARLY 8 | RANK #797 | SPON 3

Nearest open-share peer: Recurrent Breast Cancer (5% recruiting · 20 trials)

Anal Cancer42.9%Allergic Conjunctivitis14.3%Autism Spectrum Disorder (th…5%Attention Deficit Disorder W4.8%Adult Acute Myeloid Leukemia0%
Open-enrollment share among volume-matched conditions near Autism Spectrum Disorders

Autism Spectrum Disorders lists 1 open slots (5% of 21 indexed trials). Peers are matched on registered volume, not therapeutic-area browse lists. How peer matching works →

Key findings

What ClinicalTrials.gov does not surface for Autism Spectrum Disorders on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.

  1. Autism Spectrum Disorders is recruiting below its size-band peers.

    1 of 21 indexed trials (4.8%) are open to enrollment, against a 39.7% average across 762 conditions with 20-99 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.

  2. Sponsorship of Autism Spectrum Disorders trials is spread across many organizations.

    Massachusetts General Hospital accounts for 3 of 21 trials (14.3%). 15 distinct sponsors appear on at least one study for this condition label.

  3. Most Autism Spectrum Disorders trials plan to enrol fewer than 100 people.

    Median target enrolment is 40 among the 21 trials that report a genuine target (sentinel values excluded). 14 of those (66.7%) plan for fewer than 100 participants.

  4. Autism Spectrum Disorders research is mostly interventional.

    18 interventional and 3 observational studies make up this index (85.7% interventional). Study type is sponsor-reported on ClinicalTrials.gov.

Phase 14Phase 24

Open and recent trials

21 total, page 1 of 1

RECRUITING NA 108 participants

Water Competency Intervention in Autism

Ohio State University

NCT07076264

ACTIVE NOT RECRUITING 1,500 participants

Phenotypic and Genetic Factors in Autism Spectrum Disorders

Boston Children's Hospital

NCT00910559

ACTIVE NOT RECRUITING NA 200 participants

Project AFECT (Autism Family Empowerment Coaching and Training Program)

Stanford University

NCT05910502

COMPLETED Phase 2 479 participants

Withdrawal Study of Memantine in Pediatric Patients With Autism, Asperger's Disorder, or Pervasive Developmental Disorder Not Otherwise Specified Previously Treated With Memantine

Forest Laboratories

NCT01592747

COMPLETED NA 305 participants

Screening and Linkage to Services for Autism

University of Colorado, Denver

NCT02374541

COMPLETED NA 214 participants

Psychotherapy for Anxiety in Children With Autism Spectrum Disorder

University of South Florida

NCT02028247

COMPLETED 131 participants

Understanding Gastrointestinal Conditions in Children With Autism Spectrum Disorder (ASD)

Massachusetts General Hospital

NCT01675414

COMPLETED NA 80 participants

Improving Services and Outcomes for Children With Autism Spectrum Disorder (ASD)

Hugo W. Moser Research Institute at Kennedy Krieger

NCT01800539

COMPLETED Phase 2 68 participants

The Role of Vasopressin in the Social Deficits of Autism

Stanford University

NCT01962870

COMPLETED Phase 2 57 participants

Omega-3 Fatty Acids for Hyperactivity Treatment in Autism Spectrum Disorder

Hugo W. Moser Research Institute at Kennedy Krieger

NCT01694667

COMPLETED NA 40 participants

Pivotal Response Treatment for Children With Autism Spectrum Disorders

Yale University

NCT01908686

COMPLETED Phase 1 38 participants

Brain Imaging Study of Adults With Autism Spectrum Disorders

National Institute of Mental Health (NIMH)

NCT01093768

COMPLETED NA 36 participants

Syracuse University Fit Families Program: Autism

Syracuse University

NCT02940899

COMPLETED 26 participants

Autism Spectrum Disorders (ASD) Characterization Study

Massachusetts General Hospital

NCT00801554

COMPLETED NA 18 participants

Telehealth Coaching for Families of Children With Autism

University of Kansas Medical Center

NCT02928068

COMPLETED Phase 2 14 participants

Acamprosate in Youth With Fragile X Syndrome

Indiana University

NCT01300923

COMPLETED Early Phase 1 13 participants

Probiotics for Quality of Life in Autism Spectrum Disorders

Ohio State University

NCT02903030

COMPLETED NA 10 participants

Virtual Reality Social Cognition Training for Adults With Autism Spectrum Disorders

Yale University

NCT02139514

COMPLETED Phase 1 10 participants

University of California, San Diego (UCSD) Suramin Autism Treatment-1 (SAT1) Trial

University of California, San Diego

NCT02508259

COMPLETED Early Phase 1 8 participants

Pilot Study of Riluzole for Drug-Refractory Irritability in Autism Spectrum Disorders

Children's Hospital Medical Center, Cincinnati

NCT02081027

COMPLETED NA 8 participants

An Open-Label Trial of Oxytocin in Adolescents With Autism Spectrum Disorders

Massachusetts General Hospital

NCT01931033

Phase Distribution

PhaseTrial count
Phase 1 4
Phase 2 4

Named interventions

Most-linked intervention names on Autism Spectrum Disorders records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.

Vasopressin Drug
2 trials
Memantine Hydrochloride (HCl) Drug
1 trials
Omega-3 Fatty Acids Drug
1 trials
Provider Education Model (PEM) Behavioral
1 trials
Suramin Drug
1 trials
Visbiome Extra Strength Drug
1 trials
Maltose (placebo) Drug
1 trials
Intervention: Syracuse University Fir Families Program (SUFFP) Other
1 trials

US sites by state

Facility locations filed on Autism Spectrum Disorders trials. A trial with sites in several states counts in each.

Massachusetts 4 trials
California 4 trials
Ohio 3 trials
Maryland 3 trials
Florida 2 trials
Connecticut 2 trials
Colorado 2 trials
New York 1 trials

Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.

What to do with this Autism Spectrum Disorders page

21 registered trials, 1 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.

Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.

Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Autism Spectrum Disorders condition card totals 21 registered trials; most-linked intervention Vasopressin; top US site state Massachusetts. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.