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. 2010 Feb;18(2):85-9.
doi: 10.1007/BF03091743.

Recurrent and founder mutations in the Netherlands: Extensive clinical variability in Marfan syndrome patients with a single novel recurrent fibrillin-1 missense mutation

J J J Aalberts  1 , A G Schuurman, G Pals, B J C Hamel, G Bosman, Y Hilhorst-Hofstee, D Q C M Barge-Schaapveld, B J M Mulder, M P van den Berg, J P van Tintelen
Affiliations

Recurrent and founder mutations in the Netherlands: Extensive clinical variability in Marfan syndrome patients with a single novel recurrent fibrillin-1 missense mutation

J J J Aalberts et al. Neth Heart J. 2010 Feb.

Abstract

Background/Methods. Marfan syndrome (MFS) is a heritable connective tissue disorder usually caused by a mutation in the fibrillin 1 (FBN1) gene. Typical characteristics of MFS that have been described include dolichostenomelia, ectopia lentis and aortic root dilatation. However, there is great clinical variability in the expression of the syndrome's manifestations, both between and within families. Here we discuss the clinical variability of MFS by describing a large fourgeneration Dutch family with MFS.Results. Nineteen individuals of one family with a single missense FBN1 mutation (c.7916A>G) were identified. The same mutation was found in one unrelated person. Clinical variability was extensive and not all mutation carriers fulfilled the diagnostic criteria for MFS. Some patients only expressed mild skeletal abnormalities, whereas aortic root dilation was present in eight patients, an acute type A aortic dissection was recorded in two other patients, and a mitral valve prolapse was present in eight patients. In some patients cardiac features were not present on initial screening, but did however develop over time.Conclusion. MFS is a clinically highly variable syndrome, which means a meticulous evaluation of suspected cases is crucial. Mutation carriers should be re-evaluated regularly as cardiovascular symptoms may develop over time. (Neth Heart J 2010;18:85-9.).

Keywords: Marfan Syndrome/genetics; Microfilament Proteins; Missense; Mutation; Netherlands.

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Figures

Figure 1
Figure 1
Familypedigree. Filled symbols: (obligate) carriers of the FBN1 mutation 7916A>G. Index patients marked in green.
See this image and copyright information in PMC

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