BAMSE Project

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The BAMSE cohort is an acknowledged world-leading birth cohort with major contributions nationally and internationally in the field so far based on data from more than 175 scientific publications.

The BAMSE (Swedish abbreviation for Children, Allergy, Milieu, Stockholm, Epidemiology) study is an ongoing longitudinal, population-based prospective birth cohort including 4,089 children born between 1994 and 1996 in Stockholm, Sweden. The cohort was initially designed to study risk factors for asthma, allergic diseases and lung function in childhood, and to study factors of importance for prognosis at already established disease.

Questionnaires on respiratory symptoms and medication were answered at age of 1, 2, 4, 8 and 16 years. Response rates ranged from 96-82% at each occasion with very minor selection bias over the years. Exposure to air pollutants and other environmental factors has been mapped since birth.

At the 8 and 16 year follow-up, spirometry and FeNO measurements were performed and at the latter, impulse oscillometry was measured. Blood samples (including plasma) from around 2,500 children were taken at 4, 8 and 16 years and have been analyzed for different IgE-ab and biomarkers. Genome-wide genetic, global methylation and transcriptomic data exist on a subset of the children. 

Next follow upp at 24 years

The next follow-up is scheduled to commence in 2017, when participants will be 22-24 years of age, and will include questionnaire data, lung function measurements and blood sampling for different –omics analyses. In addition, complimentary data will be sought from national registers on medical diagnoses, drug prescription and health care utilization. 

With the next follow-up, we aim to lay the foundation for research on chronic allergic and respiratory diseases for decades to come using state-the-art biobank and experimental platforms, and detailed individual information on health and exposure. This project will provide knowledge about potential strategies to prevent childhood allergy, asthma from becoming chronic severe diseases in adulthood. In addition, our results may allow for identification of new candidates for drug development. 


List of publications

List of theses



HRH Prins Daniels award for promissing young scientists

2015 the Prins Daniels award for promissing young scientists from The Swedish Heart-Lung Foundation went to Erik Melén, Associate professor, Institute of Environmental Medicine and PI for the BAMSE-project


BAMSE sekretariatet

Phone: +46 8 - 123 372 50
Address: Centrum för arbets- och miljömedicin CAMM
Solnavägen 4, 10tr
S-113 65 Stockholm

PI (leading group)

Associate professor

Erik Melén

Phone: +46-(0)8-524 875 08
Organizational unit: Environmental epidemiology

Senior lecturer/nurse

Inger Kull

Organizational unit: Department of Clinical Science and Education, Södersjukhuset (KI SÖS), S1

Senior researcher

Anna Bergström

Phone: +46-(0)8-524 874 56
Organizational unit: Environmental epidemiology

Researchers in the group

Professor, senior

Magnus Wickman

Phone: +46-(0)8-524 868 88
Organizational unit: Environmental epidemiology

Professor/senior physician

Göran Pershagen

Phone: +46-(0)8-524 874 60
Organizational unit: Environmental epidemiology

.....more to come