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[Crouzon's syndrome with acanthosis nigricans]
P Lapunzina1, M C Fernández, J M Varela Junquera
1Laboratorio de Biología Molecular, Hospital Universitario La Paz, Madrid, Spain. plapunzina@hulp.insalud.es
Anales Espanoles De Pediatria
|April 3, 2002
Summary
Crouzon's syndrome, a craniosynostosis, can co-occur with acanthosis nigricans due to a distinct fibroblast growth factor receptor 3 mutation. This finding aids in accurate genetic testing and prenatal diagnosis.
Area of Science:
- Genetics
- Molecular Biology
- Dermatology
Background:
- Crouzon's syndrome is a craniosynostosis typically caused by fibroblast growth factor receptor (FGFR) type 2 mutations.
- Acanthosis nigricans is a dermatological condition with emerging recognition.
Observation:
- A female patient presented with Crouzon's syndrome and acanthosis nigricans.
- The patient's molecular analysis revealed a specific FGFR3 mutation (Ala391Glu).
Findings:
- The identified FGFR3 mutation is distinct from typical Crouzon's syndrome FGFR2 mutations.
- This mutation is located near the common achondroplasia-associated FGFR3 mutation (Gly380Arg).
- Clinical and molecular features in this case differ from isolated Crouzon's syndrome.
Implications:
- This case highlights a novel genetic link between Crouzon's syndrome and acanthosis nigricans.
- Understanding these distinct molecular findings is crucial for accurate genetic counseling.
- The data are valuable for developing precise molecular and prenatal diagnostic tests.