Double mutant fibrillin-1 (FBN1) allele in a patient with neonatal Marfan syndrome

Mei Wang, Priya Kishnani, Martha Decker-Phillips, Stephen G. Kahler, Yuan Tsong Chen, Maurice Godfrey

Research output: Contribution to journalArticle

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Abstract

It is now well established that defects in fibrillin-1 (FBN1) cause the variable and pleiotropic features of Marfan syndrome (MFS) and, at the most severe end of its clinical spectrum, neonatal Marfan syndrome (nMFS). Patients with nMFS have mitral and tricuspid valve involvement and aortic root dilatation, and die of congestive heart failure, often in the first year of life. Although mutations in classical MFS have been observed along the entire length of the FBN1 mRNA, mutations in nMFS appear to cluster in a relatively small region of FBN1, approximately between exons 24 and 34. Here we describe the appearance of two FBN1 mutations in a single allele of an infant with nMFS. The changes were within six bases of each other in exon 26. One was a T3212G transversion resulting in an I1071S amino acid substitution and the second was an A3219T transversion resulting in an E1073D amino acid, substitution. This is the first reported double mutant allele in FBN1.

Original languageEnglish (US)
Pages (from-to)760-763
Number of pages4
JournalJournal of medical genetics
Volume33
Issue number9
StatePublished - Sep 25 1996

Fingerprint

Marfan Syndrome
Alleles
Amino Acid Substitution
Mutation
Exons
Tricuspid Valve
Mitral Valve
Fibrillin-1
Dilatation
Heart Failure
Messenger RNA

Keywords

  • Fibrillin
  • Marfan syndrome
  • Mutation

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

Cite this

Wang, M., Kishnani, P., Decker-Phillips, M., Kahler, S. G., Chen, Y. T., & Godfrey, M. (1996). Double mutant fibrillin-1 (FBN1) allele in a patient with neonatal Marfan syndrome. Journal of medical genetics, 33(9), 760-763.

Double mutant fibrillin-1 (FBN1) allele in a patient with neonatal Marfan syndrome. / Wang, Mei; Kishnani, Priya; Decker-Phillips, Martha; Kahler, Stephen G.; Chen, Yuan Tsong; Godfrey, Maurice.

In: Journal of medical genetics, Vol. 33, No. 9, 25.09.1996, p. 760-763.

Research output: Contribution to journalArticle

Wang, M, Kishnani, P, Decker-Phillips, M, Kahler, SG, Chen, YT & Godfrey, M 1996, 'Double mutant fibrillin-1 (FBN1) allele in a patient with neonatal Marfan syndrome', Journal of medical genetics, vol. 33, no. 9, pp. 760-763.
Wang M, Kishnani P, Decker-Phillips M, Kahler SG, Chen YT, Godfrey M. Double mutant fibrillin-1 (FBN1) allele in a patient with neonatal Marfan syndrome. Journal of medical genetics. 1996 Sep 25;33(9):760-763.
Wang, Mei ; Kishnani, Priya ; Decker-Phillips, Martha ; Kahler, Stephen G. ; Chen, Yuan Tsong ; Godfrey, Maurice. / Double mutant fibrillin-1 (FBN1) allele in a patient with neonatal Marfan syndrome. In: Journal of medical genetics. 1996 ; Vol. 33, No. 9. pp. 760-763.
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AB - It is now well established that defects in fibrillin-1 (FBN1) cause the variable and pleiotropic features of Marfan syndrome (MFS) and, at the most severe end of its clinical spectrum, neonatal Marfan syndrome (nMFS). Patients with nMFS have mitral and tricuspid valve involvement and aortic root dilatation, and die of congestive heart failure, often in the first year of life. Although mutations in classical MFS have been observed along the entire length of the FBN1 mRNA, mutations in nMFS appear to cluster in a relatively small region of FBN1, approximately between exons 24 and 34. Here we describe the appearance of two FBN1 mutations in a single allele of an infant with nMFS. The changes were within six bases of each other in exon 26. One was a T3212G transversion resulting in an I1071S amino acid substitution and the second was an A3219T transversion resulting in an E1073D amino acid, substitution. This is the first reported double mutant allele in FBN1.

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