Hamostaseologie 2012; 32(02): 147-152
DOI: 10.5482/ha-1175
Original article
Schattauer GmbH

Thrombophilia screening in young patients with cryptogenic stroke

Prevalence of gene polymorphisms compared to healthy blood donors and impact on secondary stroke preventionGenetische Thrombophiliediagnostik nach kryptogenem Schlaganfall bei jungen PatientenPrävalenz von Mutationen im Vergleich zu einer gesunden Vergleichspopulation und Relevanz für die medikamentöse Sekundärprävention
K. G. Haeusler
1   Department of Neurology, Charité – Universitätsmedizin Berlin, Germany
2   Center for Stroke Research, Charité – Universitätsmedizin Berlin, Germany
,
J. Herm
2   Center for Stroke Research, Charité – Universitätsmedizin Berlin, Germany
,
B. Hoppe
3   Institute of Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Charité – Universitätsmedizin Berlin, Germany
,
R. Kasabov
1   Department of Neurology, Charité – Universitätsmedizin Berlin, Germany
,
U. Malzahn
2   Center for Stroke Research, Charité – Universitätsmedizin Berlin, Germany
,
M. Endres
1   Department of Neurology, Charité – Universitätsmedizin Berlin, Germany
2   Center for Stroke Research, Charité – Universitätsmedizin Berlin, Germany
4   Exzellenzcluster NeuroCure, Charité – Universitätsmedizin Berlin, Germany
,
J. Koscielny
5   Institute of Transfusion Medicine, Charité – Universitätsmedizin Berlin, Germany
,
G. J. Jungehulsing
1   Department of Neurology, Charité – Universitätsmedizin Berlin, Germany
2   Center for Stroke Research, Charité – Universitätsmedizin Berlin, Germany
› Author Affiliations
KGH, JH, ME and GJJ received funding from the Federal Ministry of Education and Research via the grant Center for Stroke Research Berlin (01 EO 0801). ME receives funding from the DFG (Excellence cluster NeuroCure; SFB TR 43, KFO 247, KFO 213), EU (Eustroke, ARISE, WakeUp), Volkswagen Foundation (Lichtenberg Program), Corona Foundation.
Further Information

Publication History

received: 31 August 2011

accepted in revised form: 02 March 2011

Publication Date:
28 December 2017 (online)

Summary

The clinical relevance of thrombophilia screening in stroke patients is still a matter of debate, and descriptions of larger patterns of genetic variability are rare. We assessed the frequency of hereditary hypercoagulability in young patients with cryptogenic stroke (n = 44) and in healthy blood donors (n = 282) without prior cardiovascular event. Furthermore, we focused on the impact of thrombophilia screening on secondary stroke prevention. Results: Compared to the control group (19–67 years; median 38.5 years; 64% women), there was a lower prevalence of the FVII-R353Q mutation (p = 0.033) in stroke patients (17–52 years; median 36 years; 59.1% women). Of note, the FVII-R353Q mutation lowers FVII plasma levels, probably reducing the risk of cardiovascular events. The prevalence of the remaining 13 gene polymorphisms did not differ significantly. However, the prevalence of FV Leiden mutation tended to be higher among stroke patients. Conclusion: Overall, extended screening for inherited thrombophilia had an impact on medical stroke prevention in every sixth patient with cryptogenic stroke.

Zusammenfassung

Die Wertigkeit einer Thrombophiliediagnostik bei Schlaganfallpatienten wird kontrovers gesehen. Ziel dieser retrospektiven Studie war es, die Häufigkeit genetisch determinierter thrombophiler Diathesen bei jungen Patienten mit kryptogenem Schlaganfall (n = 44) im Vergleich zu Blutspendern ohne bisheriges vaskuläres Ereignis (n = 282) zu erfassen und die Relevanz der Thrombophiliediagnostik für die Schlaganfallprävention zu beurteilen. Ergebnisse: Im Vergleich zu gesunden Probanden (19–67 Jahre; Median 38,5 Jahre; 64,3% Frauen) zeigte sich in der Schlaganfallkohorte (17–52 Jahre; Median 36 Jahre; 59,1% Frauen) eine niedrigere Prävalenz der FVII-R353Q-Mutation (p = 0,033), die protektiv für das Auftreten von kardiovaskulären Ereignissen sein könnte. Die Verteilung von weiteren 13 Genpolymorphismen unterschied sich hingegen nicht signifikant. Es fand sich lediglich ein Trend für eine höhere Prävalenz der FV-Leiden Mutation in der Schlaganfallkohorte. Schlussfolgerung: Anhand der Befunde der genetischen Thrombophiliediagnostik erfolgte bei einem Sechstel der jungen Patienten mit kryptogenem Schlaganfall eine Umstellung der bisherigen medikamentösen Sekundärprävention.

 
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