Clinical & Experimental Allergy

Deep phenotyping of the unselected COPSAC2010 birth cohort study

Authors

  • H. Bisgaard,

    1. Copenhagen Prospective Studies on Asthma in Childhood, Copenhagen University Hospital, Gentofte & Naestved, Denmark
    2. Health Sciences, University of Copenhagen, Copenhagen, Denmark
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  • N. H. Vissing,

    1. Copenhagen Prospective Studies on Asthma in Childhood, Copenhagen University Hospital, Gentofte & Naestved, Denmark
    2. Health Sciences, University of Copenhagen, Copenhagen, Denmark
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  • C. G. Carson,

    1. Copenhagen Prospective Studies on Asthma in Childhood, Copenhagen University Hospital, Gentofte & Naestved, Denmark
    2. Health Sciences, University of Copenhagen, Copenhagen, Denmark
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  • A. L. Bischoff,

    1. Copenhagen Prospective Studies on Asthma in Childhood, Copenhagen University Hospital, Gentofte & Naestved, Denmark
    2. Health Sciences, University of Copenhagen, Copenhagen, Denmark
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  • N. V. Følsgaard,

    1. Copenhagen Prospective Studies on Asthma in Childhood, Copenhagen University Hospital, Gentofte & Naestved, Denmark
    2. Health Sciences, University of Copenhagen, Copenhagen, Denmark
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  • E. Kreiner-Møller,

    1. Copenhagen Prospective Studies on Asthma in Childhood, Copenhagen University Hospital, Gentofte & Naestved, Denmark
    2. Health Sciences, University of Copenhagen, Copenhagen, Denmark
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  • B. L. K. Chawes,

    1. Copenhagen Prospective Studies on Asthma in Childhood, Copenhagen University Hospital, Gentofte & Naestved, Denmark
    2. Health Sciences, University of Copenhagen, Copenhagen, Denmark
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  • J. Stokholm,

    1. Copenhagen Prospective Studies on Asthma in Childhood, Copenhagen University Hospital, Gentofte & Naestved, Denmark
    2. Health Sciences, University of Copenhagen, Copenhagen, Denmark
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  • L. Pedersen,

    1. Copenhagen Prospective Studies on Asthma in Childhood, Copenhagen University Hospital, Gentofte & Naestved, Denmark
    2. Health Sciences, University of Copenhagen, Copenhagen, Denmark
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  • E. Bjarnadóttir,

    1. Copenhagen Prospective Studies on Asthma in Childhood, Copenhagen University Hospital, Gentofte & Naestved, Denmark
    2. Health Sciences, University of Copenhagen, Copenhagen, Denmark
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  • A. H. Thysen,

    1. Copenhagen Prospective Studies on Asthma in Childhood, Copenhagen University Hospital, Gentofte & Naestved, Denmark
    2. Health Sciences, University of Copenhagen, Copenhagen, Denmark
    3. Center for Biological Sequence Analysis, Department of Systems Biology, Technical University of Denmark, Lyngby, Denmark
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  • E. Nilsson,

    1. Copenhagen Prospective Studies on Asthma in Childhood, Copenhagen University Hospital, Gentofte & Naestved, Denmark
    2. Health Sciences, University of Copenhagen, Copenhagen, Denmark
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  • L. J. Mortensen,

    1. Copenhagen Prospective Studies on Asthma in Childhood, Copenhagen University Hospital, Gentofte & Naestved, Denmark
    2. Health Sciences, University of Copenhagen, Copenhagen, Denmark
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  • S. F. Olsen,

    1. Centre for Fetal Programming, Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark
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  • S. Schjørring,

    1. Department of Microbiology and Infection Control, Statens Serum Institut, Copenhagen, Denmark
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  • K. A. Krogfelt,

    1. Department of Microbiology and Infection Control, Statens Serum Institut, Copenhagen, Denmark
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  • L. Lauritzen,

    1. Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
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  • S. Brix,

    1. Center for Biological Sequence Analysis, Department of Systems Biology, Technical University of Denmark, Lyngby, Denmark
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  • K. Bønnelykke

    1. Copenhagen Prospective Studies on Asthma in Childhood, Copenhagen University Hospital, Gentofte & Naestved, Denmark
    2. Health Sciences, University of Copenhagen, Copenhagen, Denmark
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Correspondence:

Hans Bisgaard, Copenhagen Prospective Studies on Asthma in Childhood, Health Sciences, University of Copenhagen, Copenhagen University Hospital, Gentofte & Naestved, Denmark.

E-mail: bisgaard@copsac.com

Summary

Background

We hypothesize that perinatal exposures, in particular the human microbiome and maternal nutrition during pregnancy, interact with the genetic predisposition to cause an abnormal immune modulation in early life towards a trajectory to chronic inflammatory diseases such as asthma and others.

Objective

The aim of this study is to explore these interactions by conducting a longitudinal study in an unselected cohort of pregnant women and their offspring with emphasis on deep clinical phenotyping, exposure assessment, and biobanking. Exposure assessments focus on the human microbiome. Nutritional intervention during pregnancy in randomized controlled trials are included in the study to prevent disease and to be able to establish causal relationships.

Methods

Pregnant women from eastern Denmark were invited during 2008–2010 to a novel unselected ‘COPSAC2010’ cohort. The women visited the clinic during pregnancy weeks 24 and 36. Their children were followed at the clinic with deep phenotyping and collection of biological samples at nine regular visits until the age of 3 and at acute symptoms. Randomized controlled trials of high-dose vitamin D and fish oil supplements were conducted during pregnancy, and a trial of azithromycin for acute lung symptoms was conducted in the children with recurrent wheeze.

Results

Seven hundred and thirty-eight mothers were recruited from week 24 of gestation, and 700 of their children were included in the birth cohort. The cohort has an over-representation of atopic parents. The participant satisfaction was high and the adherence equally high with 685 children (98%) attending the 1 year clinic visit and 667 children (95%) attending the 2 year clinic visit.

Conclusions

The COPSAC2010 birth cohort study provides longitudinal clinical follow-up with highly specific end-points, exposure assessments, and biobanking. The cohort has a high adherence rate promising strong data to elucidate the interaction between genomics and the exposome in perinatal life leading to lifestyle-related chronic inflammatory disorders such as asthma.

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