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Factor V G1691A and prothrombin G20210A in childhood spontaneous venous thrombosis--evidence of an age-dependent thrombotic onset in carriers of factor V G1691A and prothrombin G20210A mutation.
- Source :
-
European journal of pediatrics [Eur J Pediatr] 1999 Dec; Vol. 158 Suppl 3, pp. S105-8. - Publication Year :
- 1999
-
Abstract
- Unlabelled: Risk factors for venous thrombosis in adults are the prothrombin (PT) G20210A, the factor (F) V G1691A mutations and hereditary deficiencies of protein C, protein S and antithrombin. However, data are limited on the relevance of these risk factors for thrombosis in children and adolescents. We therefore investigated 119 patients aged 0-18 with spontaneous venous thrombosis and controls (n = 100) for the presence of the factor V G1691A mutation and the prothrombin G20210A variant with respect to thrombotic onset and thrombosis location. The following frequencies (patients vs. controls), odds ratios (OR), 95%-confidence intervals (CI) and p-values were found: FV G1691A, 19.3% vs. 5%, OR/CI 4.55/1.66-12.5, p = 0.0038 and prothrombin G20210A, 8.4% vs. 3%, OR/CI 2.96/0.8-11, p = 0.17. A combination of the FV G1691A mutation with the PT G20210A variant was found in 3 children (2.5% of cases) but only once in the controls. With a median (range) age of 2 years (0-17), carriers of the FV mutation were significantly younger compared with patients carrying the PT variant (16 years: 0-18, p < 0.001). Vascular accidents in carriers of the FV mutation occurred in deep veins of the leg (n = 11), cerebral veins (n = 4), renal veins (n = 3) and portal veins (n = 2). Patients with the PT mutation showed spontaneous thrombosis in the majority of cases in the deep veins of the leg (n = 5) and in the central nervous system (n = 2). Combined defects were found in a neonate with renal venous thrombosis and in two adolescents with deep vein thrombosis.<br />Conclusion: Data presented here suggest that the heterozygous FV mutation is the most commonly found prothrombotic risk factor responsible for spontaneous thrombosis during infancy and early childhood. In contrast, the PT G20210A variant is likely to be more important during puberty and adolescence.
- Subjects :
- Adolescent
Age Distribution
Age of Onset
Case-Control Studies
Child
Child, Preschool
Female
Genetic Predisposition to Disease
Germany epidemiology
Humans
Infant
Infant, Newborn
Male
Odds Ratio
Prevalence
Risk Factors
Statistics, Nonparametric
Venous Thrombosis epidemiology
Factor V genetics
Heterozygote
Mutation
Prothrombin genetics
Venous Thrombosis genetics
Subjects
Details
- Language :
- English
- ISSN :
- 0340-6199
- Volume :
- 158 Suppl 3
- Database :
- MEDLINE
- Journal :
- European journal of pediatrics
- Publication Type :
- Academic Journal
- Accession number :
- 10650846
- Full Text :
- https://doi.org/10.1007/pl00014335