Evidence of genetic heterogeneity in MRCS (microcornea, rod-cone dystrophy, cataract, and posterior staphyloma) syndrome.
Am J Ophthalmol 2006;
141:418-20. [PMID:
16458719 DOI:
10.1016/j.ajo.2005.09.018]
[Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2005] [Revised: 09/11/2005] [Accepted: 09/13/2005] [Indexed: 11/15/2022]
Abstract
PURPOSE
To present the detailed phenotype of a subject with MRCS (microcornea, retinal dystrophy, cataract, and posterior staphyloma) syndrome and to investigate the underlying molecular genetic basis.
DESIGN
Interventional case report.
METHODS
Clinical examination, electrophysiologic assessment, B-scan ultrasonography, and mutation screening of the gene VMD2. The protocol of the study was approved by the local ethics committee and informed consent was obtained.
RESULTS
A 12-year-old boy was identified with bilateral microcornea, rod-cone dystrophy, congenital cataracts, and posterior staphylomata associated with high myopia (MRCS). Mutation screening failed to identify disease-causing sequence variants in VMD2, the gene associated with MRCS syndrome. All previous subjects have had pathogenic VMD2 sequence alterations.
CONCLUSIONS
We present a further report of the MRCS syndrome and provide evidence in support of genetic heterogeneity in this phenotype.
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