NCT00798226

Brief Summary

The aim of this study is to prevent asthma and allergies in childhood by supplementation with fish oil (n-3 fatty acids) to the mother during pregnancy. Paticipants are mother and children participating in the ABC-(Asthma Begins in Childhood)cohort. Mothers are recruited during pregnancy and receive supplement with n-3 fatty acids or olive oil (placebo) from week 24 of gestation to 1 week after delivery. The child is followed with acute and planned visit at the research unit and diagnosis of disease is done in the research unit according to predefined algorithms.

Trial Health

75
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
800

participants targeted

Target at P75+ for phase_1 asthma

Timeline
14mo left

Started Nov 2008

Longer than P75 for phase_1 asthma

Geographic Reach
1 country

2 active sites

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress94%
Nov 2008Jul 2027

First Submitted

Initial submission to the registry

November 25, 2008

Completed
1 day until next milestone

First Posted

Study publicly available on registry

November 26, 2008

Completed
Same day until next milestone

Study Start

First participant enrolled

November 26, 2008

Completed
18.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2027

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

July 1, 2027

Last Updated

April 13, 2025

Status Verified

April 1, 2025

Enrollment Period

18.6 years

First QC Date

November 25, 2008

Last Update Submit

April 9, 2025

Conditions

Keywords

AsthmaEczemaSensitizationAllergy

Outcome Measures

Primary Outcomes (1)

  • Persistent wheeze 0 to 3 years of age

    Age at onset of persistent wheeze diagnosed according to predefined algorithm of recurrent troublesome lung symptoms, response to treatment and relapse after withdrawal of treatment

    3 years

Secondary Outcomes (8)

  • Asthma exacerbations

    0-3 years

  • Infections

    0-3 years of age

  • Growth

    0 to 3 years of age

  • Neurological development

    0-3 years

  • Eczema

    0-3 years

  • +3 more secondary outcomes

Other Outcomes (27)

  • Asthma

    3-10 years of age

  • Infections

    3-10 years of age

  • Weight

    3-10 years of age

  • +24 more other outcomes

Study Arms (2)

1

ACTIVE COMPARATOR

n-3 fatty acid

Dietary Supplement: n-3 fatty acid

2

PLACEBO COMPARATOR

Olive oil

Dietary Supplement: olive oil

Interventions

n-3 fatty acidDIETARY_SUPPLEMENT

Oral intake of 4 capsules daily from week 24 of gestation to 1 week after delivery

Also known as: Incromega (Croda Nordica AB), Krossverksgatan 5 C, SE-216 16 Limhamn, Sweden
1
olive oilDIETARY_SUPPLEMENT

Oral intake of 4 capsules (1 g) daily from 24 weeks of gestation to 1 week after delivery

Also known as: Pharmatech AS, Po 85, 1662 Rolvsøy, Norway
2

Eligibility Criteria

Age18 Years+
Sexfemale
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Pregnant women
  • Living in Sealand, Denmark
  • Fluent in Danish Language
  • Willing to let the newborn child participate in the study

You may not qualify if:

  • Participating in other clinical trial

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (2)

Copenhagen University Hospital of Copenhagen

Gentofte Municipality, Gentofte, 2820, Denmark

Location

Næstved Hospital, Pediatric Department

Næstved, Næstved, 4700, Denmark

Location

Related Publications (9)

  • Chen L, Brustad N, Luo Y, Wang T, Ali M, Ebrahimi P, Schoos AM, Vahman N, Lovric M, Rasmussen MA, Kolmert J, Wheelock CE, Lasky-Su JA, Stokholm J, Bonnelykke K, Chawes B. Prenatal Fish Oil Supplementation, Maternal COX1 Genotype, and Childhood Atopic Dermatitis: A Secondary Analysis of a Randomized Clinical Trial. JAMA Dermatol. 2024 Oct 1;160(10):1082-1090. doi: 10.1001/jamadermatol.2024.2849.

  • Vinding RK, Sevelsted A, Horner D, Vahman N, Lauritzen L, Hagen CP, Chawes B, Stokholm J, Bonnelykke K. Fish oil supplementation during pregnancy, anthropometrics, and metabolic health at age ten: A randomized clinical trial. Am J Clin Nutr. 2024 Apr;119(4):960-968. doi: 10.1016/j.ajcnut.2023.12.015. Epub 2024 Feb 22.

  • Bisgaard H, Mikkelsen M, Rasmussen MA, Sevelsted A, Schoos AM, Brustad N, Eliasen AU, Thorsen J, Chawes B, Gurdeniz G, Morin A, Stark K, Stokholm J, Ober C, Pedersen CET, Bonnelykke K. Atopic and non-atopic effects of fish oil supplementation during pregnancy. Thorax. 2023 Dec;78(12):1168-1174. doi: 10.1136/thorax-2022-219725. Epub 2023 Sep 11.

  • Prince N, Kelly RS, Chu SH, Kachroo P, Chen Y, Mendez KM, Begum S, Bisgaard H, Bonnelykke K, Kim M, Levy O, Litonjua AA, Wheelock CE, Weiss ST, Chawes BL, Lasky-Su JA. Elevated third trimester corticosteroid levels are associated with fewer offspring infections. Sci Rep. 2023 Jun 28;13(1):10461. doi: 10.1038/s41598-023-36535-0.

  • Brustad N, Yang L, Chawes BL, Stokholm J, Gurdeniz G, Bonnelykke K, Bisgaard H. Fish Oil and Vitamin D Supplementations in Pregnancy Protect Against Childhood Croup. J Allergy Clin Immunol Pract. 2023 Jan;11(1):315-321. doi: 10.1016/j.jaip.2022.09.027. Epub 2022 Sep 30.

  • Horner D, Hjelmso MH, Thorsen J, Rasmussen M, Eliasen A, Vinding RK, Schoos AM, Brustad N, Sunde RB, Bonnelykke K, Chawes BL, Stokholm J, Bisgaard H. Supplementation With Fish Oil in Pregnancy Reduces Gastroenteritis in Early Childhood. J Infect Dis. 2023 Feb 1;227(3):448-456. doi: 10.1093/infdis/jiab607.

  • Vinding RK, Stokholm J, Sevelsted A, Chawes BL, Bonnelykke K, Barman M, Jacobsson B, Bisgaard H. Fish Oil Supplementation in Pregnancy Increases Gestational Age, Size for Gestational Age, and Birth Weight in Infants: A Randomized Controlled Trial. J Nutr. 2019 Apr 1;149(4):628-634. doi: 10.1093/jn/nxy204.

  • Vinding RK, Stokholm J, Sevelsted A, Sejersen T, Chawes BL, Bonnelykke K, Thorsen J, Howe LD, Krakauer M, Bisgaard H. Effect of fish oil supplementation in pregnancy on bone, lean, and fat mass at six years: randomised clinical trial. BMJ. 2018 Sep 4;362:k3312. doi: 10.1136/bmj.k3312.

  • Bisgaard H, Stokholm J, Chawes BL, Vissing NH, Bjarnadottir E, Schoos AM, Wolsk HM, Pedersen TM, Vinding RK, Thorsteinsdottir S, Folsgaard NV, Fink NR, Thorsen J, Pedersen AG, Waage J, Rasmussen MA, Stark KD, Olsen SF, Bonnelykke K. Fish Oil-Derived Fatty Acids in Pregnancy and Wheeze and Asthma in Offspring. N Engl J Med. 2016 Dec 29;375(26):2530-9. doi: 10.1056/NEJMoa1503734.

MeSH Terms

Conditions

AsthmaEczemaHypersensitivity

Interventions

Fatty Acids, Omega-3Olive Oil

Condition Hierarchy (Ancestors)

Bronchial DiseasesRespiratory Tract DiseasesLung Diseases, ObstructiveLung DiseasesRespiratory HypersensitivityHypersensitivity, ImmediateImmune System DiseasesDermatitisSkin DiseasesSkin and Connective Tissue DiseasesSkin Diseases, Eczematous

Intervention Hierarchy (Ancestors)

Dietary Fats, UnsaturatedDietary FatsFatsLipidsFatty Acids, UnsaturatedFatty AcidsFish OilsOilsFats, UnsaturatedPlant OilsFoodDiet, Food, and NutritionPhysiological PhenomenaFood and Beverages

Study Officials

  • Klaus Bønnelykke, MD, PhD

    COPSAC / University of Copenhagen

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 1
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

November 25, 2008

First Posted

November 26, 2008

Study Start

November 26, 2008

Primary Completion (Estimated)

July 1, 2027

Study Completion (Estimated)

July 1, 2027

Last Updated

April 13, 2025

Record last verified: 2025-04

Data Sharing

IPD Sharing
Will not share

Locations