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ClinicalTrials.gov 49 recruiting now early-phase tilt #125 of 28,707 conditions

Autism: early-phase trial registry

49 of 105 indexed Autism trials are currently recruiting, with more weight in Phase 1-2.

Corpus placement: #125 of 28,707 conditions by registered trial count.

105 US clinical trials · 49 currently recruiting · #125 of 28,707 conditions by registered trial count

Autism: 105 US clinical trials tracked, 49 recruiting.

Autism is the subject of 105 registered US clinical trials on ClinicalTrials.gov, 49 of them currently open to new participants. 8 are in Phase 3-4 (later-stage) and 26 in Phase 1-2 (earlier-stage). The most active sponsor is Stanford University, running 16 of these trials.

Enrollment posture brief

Registry condition autism

OPEN 49 | RECR 47% | LATE 8 | EARLY 26 | RANK #125 | SPON 16

Nearest open-share peer: Bipolar II Disorder (47% recruiting · 15 trials)

Autism (this)47%Cognitive Impairment43.4%Migraine38.1%Hematopoietic and Lymphoid C33.3%Schizoaffective Disorder29.5%
Open-enrollment share among volume-matched conditions near Autism

Autism lists 49 open slots (47% of 105 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 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 is recruiting above its size-band peers.

    49 of 105 indexed trials (46.7%) are open to enrollment, against a 37.1% average across 139 conditions with 100+ trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.

  2. One sponsor concentrates Autism research.

    Stanford University accounts for 16 of 105 trials (15.2%). 66 distinct sponsors appear on at least one study for this condition label.

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

    Median target enrolment is 60 among the 105 trials that report a genuine target (sentinel values excluded). 64 of those (61%) plan for fewer than 100 participants.

  4. Autism research is mostly interventional.

    92 interventional and 13 observational studies make up this index (87.6% interventional). Study type is sponsor-reported on ClinicalTrials.gov.

Phase 13Phase 223Phase 35Phase 43

Phase Distribution

PhaseTrial count
Phase 1 3
Phase 2 23
Phase 3 5
Phase 4 3

Named interventions

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

Placebo Drug
11 trials
Treatment as Usual Behavioral
3 trials
Aripiprazole Drug
2 trials
CM-AT Drug
2 trials
Placebo Biological
2 trials
Transcranial direct current stimulation Device
2 trials
Cord Tissue Mesenchymal Stromal Cells Biological
1 trials
Icons Other
1 trials

US sites by state

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

California 35 trials
New York 12 trials
Pennsylvania 10 trials
New Jersey 10 trials
Florida 10 trials
Ohio 9 trials
Massachusetts 9 trials
Texas 8 trials

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

What to do with this Autism page

105 registered trials, 49 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 condition card totals 105 registered trials; most-linked intervention Placebo; top US site state California. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.