Abstract
Objectives: The Norwegian Mother and Child Cohort Study (MoBa) aims to provide new insights in a broad variety of diseases. The goal of the study is to understand pathways in disease development, and identify preventive measures. Several designs are suitable for studying genetics in complex diseases like asthma and allergy, in MoBa. Methods: MoBa is a prospective population based cohort of 100 000 pregnancies, following offspring into adulthood. Enrollment started in 1999, and will be completed in 2008. A biobank with samples from the mother, father and child, together with detailed questionnaires from early pregnancy and childhood constitute the basis of the study. When studying complex diseases like asthma, a design with case-parent triads is useful. Parental effects and interactions between maternal and fetal genes can be detected. Stratifying triads by environmental exposure enables assessment of gene-environment interactions. Results: By July 2006, more than 73,000 pregnancies have been included, with nearly 7,000 siblings and 1,300 pairs of twins enrolled. Biological samples are processed and stored at the biobank. The first children are reaching age seven in 2006. Conclusion: The MoBa cohort provides an excellent basis for studying genetic, epigenetic and environmental influences on complex diseases.
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