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Where's best for autism therapy? home or center? new study aims to find out.

NCT ID NCT04899544

Symptom relief Sponsor: Stanford University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether a 16-week behavioral therapy called Pivotal Response Treatment (PRT) works better when done at a center or at home for young children with autism who have language delays. Researchers will compare both groups to children receiving usual care. The goal is to see which setting helps improve social communication and language skills.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Pivotal Response Treatment (PRT), a behavioral therapy
What this could lead to
If successful, this could show that one setting (center or home) is more effective for improving communication in young children with autism.
What could go wrong
This is a behavioral intervention trial, not a drug or cure. Results may vary by child, and the study is relatively small (120 participants), so findings may not apply to all.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 120 people

The number the study aims to enrol. It can still change while the study runs.

Started

Oct 2022

Expected to finish

Sep 2028

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

2 to 5 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Diagnosis of Autism Spectrum Disorder (ASD) based on Autism Diagnostic Interview Revised (ADI-R), Autism Diagnostic Observation Schedule, Second Edition (ADOS-2) or Childhood Autism Rating Scale, Second Edition (CARS-2), Diagnostic and Statistical Manual 5th Edition (DSM-5), and expert clinical opinion; * Boys and girls between 2.0 and 5.11 years; * Ability to participate in the testing procedures to the extent that valid standard scores can be obtained; * Language delay as measured by the Preschool Language Scale, 5th Edition (PLS-5): Standard score at least 1 standard deviation below average for expressive language ability for 2 and 3 year olds; 2 standard deviations for 4 year olds, and 3 standard deviations for 5 year olds; * Stable treatment (e.g., Applied Behavior Analysis - ABA), speech therapy, school placement, psychotropic medication(s) or biomedical intervention(s) for at least 1 month prior to baseline measurements; * No anticipated changes on treatment during study participation for Center-Based Pivotal Response Treatment (PRT-C) and In-Home Pivotal Response Treatment (PRT-H); * No more than 60 minutes of individual 1:1 speech therapy per week; * Availability of at least one parent or primary caregiver who can consistently participate in parent training and research measures. Exclusion Criteria: * Current or lifetime diagnosis of severe psychiatric disorder (e.g., bipolar disorder, etc.); * Receiving ABA of 15 hours or more; * Presence of active medical problem (e.g., unstable seizure disorder or heart disease); * Previous adequate Pivotal Response Treatment (PRT) trial; * Participants living more than 30 miles from Stanford University; * Child's primary language other than English.

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Conditions

The condition(s) this trial relates to.

atrial septal defect autism autism spectrum disorder Communication

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

ASD Autism Autism spectrum disorder

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Stanford University School of Medicine

    RECRUITING

    Stanford, California, 94305, United States

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