1. A normal electro-oculography in a family affected by best disease with a novel spontaneous mutation of the BEST1 gene.
- Author
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Testa, F., Rossi, S., Passerini, I., Sodi, A., Di Iorio, V., Interlandi, E., Della Corte, M., Menchini, U., Rinaldi, E., Torricelli, F., and Simonelli, F.
- Subjects
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ELECTROOCULOGRAPHY , *ELECTRODIAGNOSIS , *EYE examination , *HUMAN chromosome abnormality diagnosis , *GENES ,DIAGNOSIS of eye diseases - Abstract
Aims: To describe clinical and genetic findings in an Italian family affected by Best disease. Methods: Five related patients underwent a complete ophthalmological assessment; genetic testing was per- formed by single-strand conformation polymorphism analysis and direct sequencing of the BEST1 gene. Results: In three of five family members, the sequence analysis of the BEST1 gene revealed a single Phe-to-Leu transition at nucleotide 305 associated with clinical evidence of Best disease. Surprisingly, the electro-oculogram was normal in all affected patients. Conclusion: This study reveals a de novo mutation in the BEST1 gene never described before, sustaining the autosomal-dominant pattern of inheritance of the disease. Clinical evaluation showed phenotypic variability between affected members. In addition, these data suggest that a normal electro-oculography CEOG) does not rule out a diagnosis of Best disease, supporting instead the crucial role of molecular analysis. [ABSTRACT FROM AUTHOR]
- Published
- 2008
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