Omega-3 Fatty Acids Monotherapy in Children and Adolescents With Autism Spectrum Disorders

March 11, 2025 updated by: Gagan Joshi, Massachusetts General Hospital
The primary aim of this study is to examine the efficacy and tolerability of short-term omega-3 fatty acids monotherapy in youth with Autism Spectrum Disorders (ASD). The investigators hypothesize that Omega-3 fatty acids will be efficacious in improving the core and associated features of ASD in youth, and that Omega-3 fatty acids monotherapy will be safe and well tolerated by youth with ASD. The secondary aim of this study is to examine the neuropsychological effect of Omega-3 fatty acids monotherapy in youth with ASD. The investigators hypothesize that omega-3 fatty acids will be efficacious in improving cognitive functions in youth with ASD.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Terminated

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
7

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Massachusetts
      • Boston, Massachusetts, United States, 02114
        • Massachusetts General Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

2 years to 13 years (Child)

Accepts Healthy Volunteers

No

Description

Inclusion

  1. Male or female participants between 6 and 17 years of age, inclusive.
  2. Fulfills diagnosis of autism spectrum disorders by meeting DSM-IV-TR PDD diagnostic criteria of autistic disorder, Asperger's disorder, or PDD-NOS as established by clinical interview assisted by MGH PDD Symptom Checklist.
  3. Participants with at least moderate symptom severity of ASD as reflected by SRS score ≥ 85 and CGI-PDD severity score of ≥ 4 (moderately ill).
  4. Subjects must be psychotropic drug-free for a minimum of four weeks prior to the baseline visit.
  5. Subjects with mood, anxiety, or disruptive behavior disorders will be allowed to participate in the study provided they do not meet any exclusionary criteria.

Exclusion

  1. I.Q. < 85.
  2. DSM-IV-TR PDD diagnoses of Rett's disorder, and childhood disintegrative disorder.
  3. Current diagnosis of a psychotic disorder or unstable mood or anxiety disorders as determined by the clinician.
  4. Subject with marked severity of symptoms as suggested by the score of ≥ 5 (markedly ill) on CGI severity subscale for respective comorbid psychiatric disorders.
  5. Clinically unstable psychiatric condition judged to be at a serious risk to self or others as determined by the clinician.
  6. History of substance use (except nicotine or caffeine) within past 3 months, determined to be clinically significant by clinician.
  7. Urine drug screen positive for substances of abuse.
  8. Non-febrile seizures without a clear and resolved etiology in last month.

  9. Subjects with a medical condition or treatment that will either jeopardize subject safety or affect the scientific merit of the study, including:

    1. Pregnant or nursing females;
    2. Organic brain disorders;
    3. Uncorrected hypothyroidism or hyperthyroidism, as determined by study clinician;
    4. Untreated and/or unstable diabetes;
    5. Subjects with a clinically significant abnormality according to cardiology consultation (ECGs with clinically concerning intervals including PR, QTC, QRS, will be reviewed by cardiology).
    6. History of renal or hepatic impairment determined to be clinically significant by clinician.
  10. Serious, unstable systemic illness including hepatic, renal, gastroenterological, respiratory, cardiovascular (including ischemic heart disease), endocrinologic, neurologic, immunologic, or hematologic disease, as determined by clinician.
  11. Any other concomitant medication with primary central nervous system activity other than specified in the Concomitant Medication section of the protocol.
  12. Subjects who have difficulty swallowing pills.
  13. History of known allergy to Omega-3 fatty acids, multiple drug allergies, or severe allergies.
  14. A non-responder of, or history of intolerance to Omega-3 fatty acids, after treatment at an adequate dose and duration as determined by the clinician.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Omega-3 Fatty Acid Treatment
Drug: Omega-3 Fatty Acid
Children with Autism Spectrum Disorders will be randomized to receive either 1500mg (3 capsules) omega-3 fatty acids or placebo. Each 500mg capsule contains 350mg EPA and 50mg DHA. Omega-3 fatty acids dosing will be on a forced titration schedule to 3 capsules per day. All subjects will start with 1 capsule per day with an increase to 3 capsules per day by week 2. Subjects will be maintained at 3 capsules per day thereafter until the end of the trial (completion/discontinuation). During the 12 weeks of the study period, participants will be evaluated at weekly intervals during the first three weeks of the trial (baseline, weeks 1-3) and tri-weekly thereafter till the end of the trial (weeks 6, 9 and 12). At each visit, measures of safety and effectiveness will be administered and subjects will be evaluated for response and side effects to the treatment. Study medications will be prescribed under double blind conditions.
Other Names:
  • Fish Oil
Placebo Comparator: Placebo (Sugar Pill)
Drug: Omega-3 Fatty Acid
Children with Autism Spectrum Disorders will be randomized to receive either 1500mg (3 capsules) omega-3 fatty acids or placebo. Each 500mg capsule contains 350mg EPA and 50mg DHA. Omega-3 fatty acids dosing will be on a forced titration schedule to 3 capsules per day. All subjects will start with 1 capsule per day with an increase to 3 capsules per day by week 2. Subjects will be maintained at 3 capsules per day thereafter until the end of the trial (completion/discontinuation). During the 12 weeks of the study period, participants will be evaluated at weekly intervals during the first three weeks of the trial (baseline, weeks 1-3) and tri-weekly thereafter till the end of the trial (weeks 6, 9 and 12). At each visit, measures of safety and effectiveness will be administered and subjects will be evaluated for response and side effects to the treatment. Study medications will be prescribed under double blind conditions.
Other Names:
  • Fish Oil

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Change From Baseline in Social Responsiveness Scale (SRS) Total Raw Score
Time Frame: Pre-treatment - 12 weeks
The SRS is a 65-item rating scale completed by the participants parent or guardian. The scale measures the severity of autism spectrum symptoms as the occur in natural social settings. The total raw score is calculated by summing the 65 items. Total scores range from 0 to 195, where higher scores indicate greater severity. The outcome reported reflects the change from baseline (pre-treatment) in SRS Total raw score. When examining change from baseline, negative scores represent improvement (i.e., decrease in severity from baseline).
Pre-treatment - 12 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Change in NIMH Clinical Global Impression Scale for Pervasive Developmental Disorders (CGI-PDD) Improvement Scores
Time Frame: Pre-treatment - 12 weeks
The CGI-PDD Improvement scale is a clinician-rated assessment of the participant's improvement in symptoms compared to baseline. The CGI-PDD-I is rated on a scale of one (very much improved) to seven (very much worse) and values of zero (not assessed) are assigned to all participants at baseline. The outcome reported reflects the change in improvement score from baseline, where lower scores indicate greater improvement compared to baseline.
Pre-treatment - 12 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Massachusetts General Hospital

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Gagan Joshi, MD, Massachusetts General Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 1, 2009

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
April 1, 2013

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
April 1, 2013

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 19, 2010

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 23, 2010

First Posted (Estimated)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 25, 2010

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 27, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 11, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2009-P-001593

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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