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Erratum Free access | 10.1172/JCI5471E1

Deletion of the fibrinogen alpha-chain gene (FGA) causes congenital afibrogenemia

Marguerite Neerman-Arbez, Ariane Honsberger, Stylianos E. Antonarakis, and Michael A. Morris

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Published March 1, 1999 - More info

Published in Volume 103, Issue 5 on March 1, 1999
J Clin Invest. 1999;103(5):759–759. https://doi.org/10.1172/JCI5471E1.
© 1999 The American Society for Clinical Investigation
Published March 1, 1999 - Version history
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Deletion of the fibrogen alpha-chain gene (FGA) causes congenital afibrogenemia
Marguerite Neerman-Arbez, … , Stylianos E. Antonarakis, Michael A. Morris
Marguerite Neerman-Arbez, … , Stylianos E. Antonarakis, Michael A. Morris
Article

Deletion of the fibrogen alpha-chain gene (FGA) causes congenital afibrogenemia

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Abstract

Congenital afibrinogenemia is a rare autosomal recessive disorder characterized by the complete absence of detectable fibrinogen. Uncontrolled bleeding after birth from the umbilical cord is common, and spontaneous intracerebral bleeding and splenic rupture can occur throughout life. Patients respond well to fibrinogen replacement therapy, either prophylactically or on demand. Because the half-life of infused fibrinogen is essentially normal, the genetic defect is assumed to be at the level of synthesis, but no responsible locus has been identified. Preliminary studies using Southern blotting suggested that no gross structural changes of the fibrinogen genes were present in patients. We report the identification of causative mutations in a nonconsanguineous Swiss family with congenital afibrinogenemia. The four affected male individuals (two brothers and their two first cousins) have homozygous deletions of ∼11 kb of the fibrinogen alpha-chain gene (FGA). Haplotype data suggest that these deletions occurred separately, on three distinct ancestral chromosomes, implying that the FGA region of the fibrinogen locus is susceptible to deletion by a common mechanism. Furthermore, our results demonstrate that humans, like mice, may be born without the capacity to synthesize functional fibrinogen.

Authors

Marguerite Neerman-Arbez, Ariane Honsberger, Stylianos E. Antonarakis, Michael A. Morris

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J. Clin. Invest.103:215–218 (1999)

In the editing process, the abbreviation for FGA was incorrectly spelled out. The correct spelling appears above.

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  • Version 1 (March 1, 1999): No description

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