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PregnancyPhase 3NCT02487771

Kansas University DHA Outcome Study (KUDOS) Follow-Up

A Phase 3 study testing DHA in people with Pregnancy, run by Susan Carlson, PhD at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This is a continuation study to KUDOS (NCT00266825). The purpose of this study is to follow-up with participants on the original study to determine if the effects of increasing DHA intake during pregnancy increase cognitive development in 2 to 6 year-old children. Read more about this study

Who is it for?
Ages 16 to 35 years, women onlyHealthy volunteers can take part
Conditions the study is for
Pregnancy
What is being tested?
DHA
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
190 participants
Where
1 siteUnited States
Study dates
Jul 2008to May 2016
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 16 to 35 years
  • Women only
  • Healthy volunteers accepted
  • Child, Adult

Who may be able to join

  • Pregnant females 16.0-35.0 years of age (inclusive) at 8-20 weeks gestation at enrollment (date/ultrasound)
  • Agree to consume study capsules from enrollment until delivery
  • Agree to return to the study center for delivery
  • BMI < 40
  • No serious illnesses (e.g., cancer, diabetes, lupus, hepatitis, sexually transmitted diseases, not HIV positive)
  • Available by telephone

Who cannot join

  • Less than 16 or greater than 35 years of age
  • BMI < 40
  • Serious illness such as cancer, lupus, hepatitis, sexually transmitted disease or HIV positive
  • Expecting multiple infants
  • Diabetes or gestational diabetes at baseline
  • Elevated blood pressure due to any cause
Show all 10Show fewer
  • Not planning to return to the study center for delivery
  • Gestational age at baseline < 8 weeks or >20 weeks
  • Unable or unwilling to agree to consume capsules until delivery
  • Unable to provide informed consent in English

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University of Kansas Medical Center

    Kansas City, Kansas, 66160

Other trials in United States

About this study

This is a continuation study to KUDOS (NCT00266825). The purpose of this study is to follow-up with participants on the original study to determine if the effects of increasing DHA intake during pregnancy increase cognitive development in 2 to 6 year-old children.

Read the detailed description

Numerous trials show benefits of postnatal DHA supplementation for visual acuity. There are also numerous observational(not intervention)studies that link higher maternal DHA status during pregnancy to higher cognitive function. Intervention studies that increase DHA exposure during fetal life and that measure cognitive development of infants are lacking; and no study to date has systematically followed children whose mothers were randomly assigned to DHA supplementation to school age with regular 6 month assessments of age-appropriate assessments of cognitive development. The absence of such studies is a serious limitation because there is evidence that differences in cognitive function due to such interventions do not become robust until around age 4 years. Women in the US consume low amounts of DHA compared to other world populations, and this likely means less DHA transfer to the fetus than in many other populations. Prenatal DHA exposure may be more important than postnatal exposure, because animal studies show critical windows for brain DHA accumulation in relation to effects on neurotransmitters such as serotonin, dopamine and GABA.

Conditions
Pregnancy
Being tested
DHA, Placebo Capsule
Keywords
DHA, childhood development

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • DHADrug

    Also called docosahexaenoic acid

    600 mg DHA capsule

  • Placebo CapsuleDrug

    600 mg of Soybean Oil and Corn Oil, which does not contain any DHA

Study groups in NCT02487771
Study groupRoleWhat they receive
Placebo CapsulePlacebo comparatorNot described
Receives: Drug: Placebo Capsule
DHA CapsuleExperimentalNot described
Receives: Drug: DHA

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Weschler Preschool and Primary Scale of Intelligence, 3rd Edition; Full Scale IQ

    The Full Scale IQ score from the Weschler Preschool and Primary Scale of Intelligence, 3rd Edition is a standardized measure of a child's general intellectual ability based upon assessments of verbal, cognitive, and performance domains. At three years the Full Scale IQ score has a range of 41 (poorest performance) to 155 (best performance). For the older ages the score can range from 40 to 160. For all ages the assessment is normed to a Mean = 100, St Dev = 15.

    Measured: 36 Months

  2. Weschler Preschool and Primary Scale of Intelligence, 3rd Edition; Full Scale IQ

    The Full Scale IQ score from the Weschler Preschool and Primary Scale of Intelligence, 3rd Edition is a standardized measure of a child's general intellectual ability based upon assessments of verbal, cognitive, and performance domains. At three years the Full Scale IQ score has a range of 41 (poorest performance) to 155 (best performance). For the older ages the score can range from 40 to 160. For all ages the assessment is normed to a Mean = 100, St Dev = 15.

    Measured: 48 Months

  3. Weschler Preschool and Primary Scale of Intelligence, 3rd Edition; Full Scale IQ

    The Full Scale IQ score from the Weschler Preschool and Primary Scale of Intelligence, 3rd Edition is a standardized measure of a child's general intellectual ability based upon assessments of verbal, cognitive, and performance domains. At three years the Full Scale IQ score has a range of 41 (poorest performance) to 155 (best performance). For the older ages the score can range from 40 to 160. For all ages the assessment is normed to a Mean = 100, St Dev = 15.

    Measured: 72 Months

  4. Cognitive Function Score - Peabody Picture Vocabulary Test

    The Peabody Picture Vocabulary Test, 3rd Edition provides a standardized assessment of a person's receptive vocabulary. The Standard Score can range from 40 (poorest performance) to 160 (best performance) and has been normed to a Mean = 100, St Dev = 15.

    Measured: 60 Months

  5. Cognitive Function Score - Test of Preschool Early Literacy

    The Test of Preschool Early Literacy provides a standardized Early Literacy Index score, a measure of general, early literacy skills that relate to later reading and writing skill acquisition. The score is based on assessments of vocabulary, print knowledge, and phonological awareness. The score can range from 40 (poorest performance) to 144 (best performance) and has been normed to a Mean = 100, St Dev = 15.

    Measured: 42 Months

  6. Weschler Preschool and Primary Scale of Intelligence, 3rd Edition; Verbal IQ

    The Verbal IQ score from the Weschler Preschool and Primary Scale of Intelligence, 3rd Edition is a standardized measure of a child's verbal ability based upon assessments of vocabulary, general knowledge, and reasoning. At three years the Verbal IQ score has a range of 49 (poorest performance) to 150 (best performance). For the older ages the score can range from 46 to 155. For all ages the assessment is normed to a Mean = 100, St Dev = 15.

    Measured: 36 Months

  7. Weschler Preschool and Primary Scale of Intelligence, 3rd Edition; Verbal IQ

    The Verbal IQ score from the Weschler Preschool and Primary Scale of Intelligence, 3rd Edition is a standardized measure of a child's verbal ability based upon assessments of vocabulary, general knowledge, and reasoning. At three years the Verbal IQ score has a range of 49 (poorest performance) to 150 (best performance). For the older ages the score can range from 46 to 155. For all ages the assessment is normed to a Mean = 100, St Dev = 15.

    Measured: 48 Months

  8. Weschler Preschool and Primary Scale of Intelligence, 3rd Edition; Verbal IQ

    The Verbal IQ score from the Weschler Preschool and Primary Scale of Intelligence, 3rd Edition is a standardized measure of a child's verbal ability based upon assessments of vocabulary, general knowledge, and reasoning. At three years the Verbal IQ score has a range of 49 (poorest performance) to 150 (best performance). For the older ages the score can range from 46 to 155. For all ages the assessment is normed to a Mean = 100, St Dev = 15.

    Measured: 72 Months

Secondary outcomes (4)
  1. Adaptive Regulation Assessment

    The Parent Rating Scales of the Behavior Assessment System for Children 2nd Edition measures different aspects of a child's behaviors as reported by a parent. Externalizing Problems is a measure of Aggression and Hyperactivity. Internalizing Problems is a measure of Anxiety, Depression, and Somatization. The Behavioral Symptoms Index is a more global measure of behavior problems and combines Externalizing Problems with the measure of Depression from Internalizing Problems, and additional measures of Atypicality, Withdrawal, and Attention Problems. Adaptive Skills is a measure of Adaptability, Social Skills, Activities of Daily Living, Functional Communication, and at age 6 years Leadership. All scores are derived from the general, combined sex normative tables of T-Scores. For Adaptive Skills higher T-Scores reflect a more optimal outcome. For all other measures lower T-Scores reflect a more optimal outcome. All T-Scores were standardized with a Mean = 50, St Dev = 10.

    Measured: 36 Months

  2. Adaptive Regulation Assessment

    The Parent Rating Scales of the Behavior Assessment System for Children 2nd Edition measures different aspects of a child's behaviors as reported by a parent. Externalizing Problems is a measure of Aggression and Hyperactivity. Internalizing Problems is a measure of Anxiety, Depression, and Somatization. The Behavioral Symptoms Index is a more global measure of behavior problems and combines Externalizing Problems with the measure of Depression from Internalizing Problems, and additional measures of Atypicality, Withdrawal, and Attention Problems. Adaptive Skills is a measure of Adaptability, Social Skills, Activities of Daily Living, Functional Communication, and at age 6 years Leadership. All scores are derived from the general, combined sex normative tables of T-Scores. For Adaptive Skills higher T-Scores reflect a more optimal outcome. For all other measures lower T-Scores reflect a more optimal outcome. All T-Scores were standardized with a Mean = 50, St Dev = 10.

    Measured: 48 Months

  3. Adaptive Regulation Assessment

    The Parent Rating Scales of the Behavior Assessment System for Children 2nd Edition measures different aspects of a child's behaviors as reported by a parent. Externalizing Problems is a measure of Aggression and Hyperactivity. Internalizing Problems is a measure of Anxiety, Depression, and Somatization. The Behavioral Symptoms Index is a more global measure of behavior problems and combines Externalizing Problems with the measure of Depression from Internalizing Problems, and additional measures of Atypicality, Withdrawal, and Attention Problems. Adaptive Skills is a measure of Adaptability, Social Skills, Activities of Daily Living, Functional Communication, and at age 6 years Leadership. All scores are derived from the general, combined sex normative tables of T-Scores. For Adaptive Skills higher T-Scores reflect a more optimal outcome. For all other measures lower T-Scores reflect a more optimal outcome. All T-Scores were standardized with a Mean = 50, St Dev = 10.

    Measured: 60 Months

  4. Adaptive Regulation Assessment

    The Parent Rating Scales of the Behavior Assessment System for Children 2nd Edition measures different aspects of a child's behaviors as reported by a parent. Externalizing Problems is a measure of Aggression and Hyperactivity. Internalizing Problems is a measure of Anxiety, Depression, and Somatization. The Behavioral Symptoms Index is a more global measure of behavior problems and combines Externalizing Problems with the measure of Depression from Internalizing Problems, and additional measures of Atypicality, Withdrawal, and Attention Problems. Adaptive Skills is a measure of Adaptability, Social Skills, Activities of Daily Living, Functional Communication, and at age 6 years Leadership. All scores are derived from the general, combined sex normative tables of T-Scores. For Adaptive Skills higher T-Scores reflect a more optimal outcome. For all other measures lower T-Scores reflect a more optimal outcome. All T-Scores were standardized with a Mean = 50, St Dev = 10.

    Measured: 72 Months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted1 Jul 2015 (estimated)
  2. Study startJul 2008
  3. Primary completionMay 2016
  4. Study completionMay 2016

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
190 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02487771
Sponsor's protocol ID
11406
Other IDs
1R01HD047315
Status last verified
Jan 2018
First submitted
18 Jun 2012
Last updated
7 Feb 2018
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No

Publications

  • Colombo J, Shaddy DJ, Gustafson K, Gajewski BJ, Thodosoff JM, Kerling E, Carlson SE. The Kansas University DHA Outcomes Study (KUDOS) clinical trial: long-term behavioral follow-up of the effects of prenatal DHA supplementation. Am J Clin Nutr. 2019 May 1;109(5):1380-1392. doi: 10.1093/ajcn/nqz018.

    PubMed 31004139
  • Kerling EH, Hilton JM, Thodosoff JM, Wick J, Colombo J, Carlson SE. Effect of Prenatal Docosahexaenoic Acid Supplementation on Blood Pressure in Children With Overweight Condition or Obesity: A Secondary Analysis of a Randomized Clinical Trial. JAMA Netw Open. 2019 Feb 1;2(2):e190088. doi: 10.1001/jamanetworkopen.2019.0088.

    PubMed 30794304

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing DHA in people with Pregnancy, run by Susan Carlson, PhD at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 7 Feb 2018. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 25 Sep 2017). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Weschler Preschool and Primary Scale of Intelligence, 3rd Edition; Full Scale IQ (time frame: 36 Months). The study lists 8 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02487771, which also lists 2 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 7 Feb 2018; AzTrials last refreshed its copy on 7 Nov 2026.

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