Mutation analysis of Crouzon syndrome and identification of one novel mutation in Taiwanese patients.
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Tsai FJ, Yang CF, Wu JY, Tsai CH, Lee CC
Mutation analysis of Crouzon syndrome and identification of one novel mutation in Taiwanese patients.
Pediatr Int. 2001 Jun;43(3):263-6.
- PubMed ID
- 11380921 [ View in PubMed]
- Abstract
BACKGROUND: Crouzon syndrome is an autosomal dominant disorder causing premature fusion of the cranial suture. Mutations have been reported in exon IIIa or IIIc of the fibroblast growth factor receptor 2 (FGFR2) gene. METHODS: In the present study, nine unrelated Crouzon syndrome patients were screened for mutations in the two exons of FGFR2 by polymerase chain reaction and direct sequencing. RESULTS: Mutations were detected in 67% (6/9) of all cases. More than half the studied Crouzon patients carried a mutation resulting in either the loss or gain of a cysteine residue. A novel mutation, Tyr281Cys substitution, was discovered at exon IIIa. CONCLUSIONS: The mechanisms by which the same genotypes cause different phenotypes for each type of craniosynostosis syndrome in still uncertain. However, the molecular identification of the FGFR gene has made a great impact on the clinical classification of craniosynostosis syndromes; a new classification based on genotypes seems to be unavoidable.