Zusammenfassung
Eine Vielzahl von kardiovaskulären Erkrankungen hat eine genetische Ursache und ist damit familiär. Die meisten dieser Erkrankungen werden den sog. Seltenen (Herz-)Erkrankungen (Prävalenz < 1:2000) zugerechnet; lediglich die hypertrophe Kardiomyopathie und die familiäre Hypercholesterinämie sind häufiger. Oft bestehen eine genetische Heterogenität und Komplexität (5 bis 15 Gene pro Erkrankung) und eine variable, phänotypische Manifestation einer spezifischen Mutation in einer Familie. Einer molekulargenetischen Untersuchung kommt je nach Erkrankung neben der diagnostischen mitunter auch eine therapeutische, präventive und damit auch prognostische Bedeutung zu. Sie kann bei der Früherkennung und innerhalb einer Familie hilfreich sein. Das vorliegende Positionspapier nimmt zur Bedeutung von molekulargenetischen Untersuchungen bei bestimmten Arrhythmieformen, Kardiomyopathien, Herz- und Gefäßfehlern, seltenen Syndromen als auch der familiären Hypercholesterinämie und molekularen Autopsie (SIDS, SUDS) Stellung und soll hierbei hilfreich sein.
Abstract
Many cardiovascular disorders have a genetic background and occur in a familial setting. The majority belong to the group of rare diseases as their prevalence is low (< 1:2000); only hypertrophic cardiomyopathy and familial hypercholesterolemia are more frequent. There is often a widespread genetic heterogeneity and complexity (5–15 specific genes causing the disease) and a private (family-specific) mutation associated with a variable phenotypic manifestation. Molecular diagnostics and genetic testing are helpful in cardiovascular diseases and may be useful for therapeutic and preventive decisions in addition to the diagnostic value. In particular, they allow early detection of disease development and better family counselling. This expert consensus statement provides useful information and recommendations on the importance of genetic testing in cardiac arrhythmia, cardiomyopathy, congenital heart and vessel diseases, rare cardiac syndromes as well as in familial hypercholesterolemia and for molecular autopsies, e.g. for sudden infant death syndrome (SIDS) and sudden unexpected death syndrome (SUDS).
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Ein Glossar „Humangenetische Fachausdrücke“ findet sich z. B. unter http://klinikum.uni-muenster.de/index.php?id=4640.
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Schulze-Bahr, E., Klaassen, S., Abdul-Khaliq, H. et al. Gendiagnostik bei kardiovaskulären Erkrankungen. Kardiologe 9, 213–243 (2015). https://doi.org/10.1007/s12181-014-0636-2
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DOI: https://doi.org/10.1007/s12181-014-0636-2