Thromb Haemost 1993; 70(06): 0915-0920
DOI: 10.1055/s-0038-1649699
Original Article
Clinical Studies
Schattauer GmbH Stuttgart

The Role of β-Fibrinogen Genotype in Determining Plasma Fibrinogen Levels in Young Survivors of Myocardial Infarction and Healthy Controls from Sweden

Authors

  • Fiona Green

    1   The Centre for the Genetics of Cardiovascular Disorders, Department of Medicine, University College London Medical School, The Rayne Institute, London, UK
  • Anders Hamsten

    2   The King Gustaf V Research Institute, Department of Internal Medicine, Karolinska Hospital, Stockholm, Sweden
  • Margareta Blombäck

    3   The Department of Clinical Chemistry and Blood Coagulation, Karolinska Hospital, Stockholm, Sweden
  • Steve Humphries

    1   The Centre for the Genetics of Cardiovascular Disorders, Department of Medicine, University College London Medical School, The Rayne Institute, London, UK
Further Information

Publication History

Received 17 March 1993

Accepted after revision 12 July 1993

Publication Date:
06 July 2018 (online)

Preview

Summary

β-fibrinogen G/A-455 polymorphism genotype was determined in 123 young survivors of myocardial infarction and 86 healthy controls from Sweden. Frequency of the A-455 allele was 0.25 (95% Confidence Interval 0.21–0.29) in both patients and controls, significantly higher than that reported previously (0.19, 95% Cl 0.16–0.22) in 292 men from the UK (1). Mean plasma fibrinogen level was significantly higher in patients (3.6 g/1) than in controls (3.1 g/1), with p <0.001. Genotype was significantly associated with (adjusted) plasma fibrinogen level in controls (p = 0.003). This effect was confined to the smokers (n = 50) where mean fibrinogen level was significantly (p = 0.001) higher in G/A-455 and A/A-455 individuals (3.5 g/1) compared with G/G-455 homozygotes (2.9 g/1). There was a significant interaction between smoking status and genotype in determining plasma fibrinogen levels in the controls. These data provide independent confirmation of the association between β-fibrinogen G/A-455 genotype and plasma fibrinogen levels previously observed in healthy men from the UK (1).