The association between exposure to interferon-beta during pregnancy and birth measurements in offspring of women with multiple sclerosis

Autoři: Sarah Burkill aff001;  Pia Vattulainen aff003;  Yvonne Geissbuehler aff004;  Meritxell Sabido Espin aff005;  Catrinel Popescu aff006;  Kiliana Suzart-Woischnik aff007;  Jan Hillert aff008;  Miia Artama aff009;  Auli Verkkoniemi-Ahola aff010;  Kjell-Morten Myhr aff011;  Sven Cnattingius aff002;  Pasi Korhonen aff003;  Scott Montgomery aff002;  Shahram Bahmanyar aff001
Působiště autorů: Centre for Pharmacoepidemiology, Karolinska Institutet, Stockholm, Sweden aff001;  Division of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden aff002;  EPID research, Helsinki, Finland aff003;  Novartis Pharma AG, Basel, Switzerland aff004;  Merck group, Darmstadt, Germany aff005;  Biogen, Maidenhead, United Kingdom aff006;  Bayer AG, Berlin, Germany aff007;  Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden aff008;  National Institute for Health and Welfare, Helsinki, Finland aff009;  Department of Neurology, Helsinki University, Helsinki, Finland aff010;  Department of Clinical Medicine, University of Bergen, Bergen, Norway aff011;  Clinical Epidemiology and Biostatistics School of Medical Sciences, Örebro University, Örebro, Sweden aff012;  Department of Epidemiology and Public Health, University College London, London, United Kingdom aff013
Vyšlo v časopise: PLoS ONE 14(12)
Kategorie: Research Article



Interferon-beta (IFN-beta) is a commonly used treatment for multiple sclerosis (MS). Current guidelines recommend cessation of treatment during pregnancy, however the results of past studies on the safety of prenatal exposure to IFN-beta have been conflicting. A large scale study of a population of MS women is therefore warranted.


To assess whether, among those born to women with MS, infants prenatally exposed to IFN-beta show evidence of smaller size at birth relative to infants which were not prenatally exposed to any MS disease modifying drugs.


Swedish and Finnish register data was used. Births to women with MS in Sweden and Finland between 2005–2014 for which a birth measurement for weight, height, and head circumference was available were included. The exposure window was from 6 months prior to LMP to the end of pregnancy.


In Sweden, 411 pregnancies were identified as exposed to IFN-beta during the exposure window, and 835 pregnancies were counted as unexposed to any MS DMD. The corresponding numbers for Finland were 232 and 331 respectively. Infants prenatally exposed to interferon-beta were on average 28 grams heavier (p = 0.17), 0.01 cm longer (p = 0.95), and had head circumferences 0.14 cm larger (p = 0.13) in Sweden. In Finland, infants were 50 grams lighter (p = 0.27), 0.02 cm shorter (p = 0.92) and had head circumferences 0.22 cm smaller (p = 0.15) relative to those unexposed.


This study provides evidence that exposure to IFN-beta during pregnancy does not influence birth weight, length, or head circumference.

Klíčová slova:

Birth – Birth weight – Drug therapy – Infants – Multiple sclerosis – Pregnancy – Sweden – Finland


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2019 Číslo 12
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