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  BIGH3 Mutation Spectrum in Corneal Dystrophies

Munier, F. L., Frueh, B. E., Othenin-Girard, P., Uffer, S., Cousin, P., Wang, M. X., et al. (2002). BIGH3 Mutation Spectrum in Corneal Dystrophies. Investigative Ophthalmology & Visual Science, 43(4), 949-954.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-0010-8C20-1 Versions-Permalink: https://hdl.handle.net/11858/00-001M-0000-0010-8C21-0
Genre: Zeitschriftenartikel

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 Urheber:
Munier, Francis L., Autor
Frueh, Beatrice E., Autor
Othenin-Girard, Philippe, Autor
Uffer, Sylvie, Autor
Cousin, Pascal, Autor
Wang, Ming X., Autor
Héon, Elise, Autor
Black, Graeme C. M., Autor
Blasi, Maria A., Autor
Balestrazzi, Emilio, Autor
Lorenz, Birgit, Autor
Escoto, Rafael, Autor
Barraquer, Rafael, Autor
Hoeltzenbein, Maria1, Autor
Gloor, Balder, Autor
Fossarello, Maurizio, Autor
Singh, Arun D., Autor
Arsenijevic, Yvan, Autor
Zografos, Léonidas, Autor
Schorderet, Daniel F., Autor
Affiliations:
1Max Planck Society, ou_persistent13              

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Schlagwörter: -
 Zusammenfassung: PURPOSE. To investigate the molecular pathology underlying BIGH3-related corneal dystrophies (CDs) and to further delineate genotype-phenotype specificity. METHODS. Sixty-one index patients with CDs were subjected to phenotypic and genotypic characterization. The corneal phenotypes of all patients were assessed by biomicroscopy and documented by slit lamp photography. The BIGH3 gene was amplified exon by exon from constitutional DNA to perform single-strand conformation polymorphism (SSCP) analysis, followed by direct bidirectional sequencing of abnormal conformers. RESULTS. The phenotypes of CDs were classified as lattice CD in 30 patients, Groenouw type I in 12 (CDGGI), Avellino in 7 (CDA), Reis-Bückler in 8 (CDRB), and Thiel-Behnke in 4 (CDTB). Fifty occurrences of 16 distinct mutations were identified, including 8 novel mutations responsible for lattice type IIIA in three patients (CDLIIA), intermediate type I/IIIA (CDLI/IIIA) in four patients, and atypical CDL with deep deposits in one patient (CDL-deep). CONCLUSIONS. Disease-causing mutations were identified in 80% of the patients (50/61). All mutations localize in two regions of kerato-epithelin: the amino acid R124 and BIGH3 fasc domain 4. This study also confirms the mutation hot spot at positions R124 and R555 with nearly 50% of the mutations targeting these two amino acids (24/50). In addition the corneal phenotypes induced by changes at R124 and R555 are amino acid specific: R124C in CDLI, R555W and R124S in CDGGI, R124H in CDA, R124L in CRRB, and R555Q in CDTB. In CDLIIIA, CDLI/IIIA, and CDL-deep the genotype-phenotype correlation is domain specific, with all changes occurring at the boundary or within the fasc4 domain.

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Sprache(n): eng - English
 Datum: 2002-04
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: eDoc: 24189
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Titel: Investigative Ophthalmology & Visual Science
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 43 (4) Artikelnummer: - Start- / Endseite: 949 - 954 Identifikator: -