Clinical and genetic heterogeneity in multifocal vitelliform dystrophy
Camiel J F Boon1, B Jeroen Klevering, Anneke I den Hollander
1Department of Ophthalmology, Radboud University Nijmegen Medical Centre, PO Box 9101, 6500 HB Nijmegen, the Netherlands.
Archives of Ophthalmology (Chicago, Ill. : 1960)
|August 19, 2007
Summary
Multifocal vitelliform dystrophy is a varied retinal disease. Mutations in the vitelliform macular dystrophy 2 (VMD2) gene were found in most patients, but other genetic causes are possible.
Area of Science:
- Ophthalmology
- Genetics
- Medical Research
Background:
- Multifocal vitelliform lesions represent a distinct retinal phenotype.
- Understanding the genetic basis is crucial for diagnosis and prognosis.
Purpose of the Study:
- To characterize the clinical and genetic features of 15 patients with multifocal vitelliform lesions.
- To investigate mutations in the VMD2 and peripherin/RDS genes.
Main Methods:
- Ophthalmic examinations were performed on patients and family members.
- Genomic DNA analysis focused on identifying mutations in the VMD2 gene.
- Patients negative for VMD2 mutations were screened for peripherin/RDS gene variants.
Main Results:
- Disease onset varied widely (5-59 years).
- Peripheral lesions shared imaging characteristics with central lesions.
- VMD2 gene mutations were identified in 9 out of 15 patients.
- One patient had a sequence variant in the peripherin/RDS gene.
Conclusions:
- Multifocal vitelliform dystrophy is genetically heterogeneous, with VMD2 mutations being a common cause.
- Further research is needed to identify other genes associated with this condition.
- Clinical and genetic characterization aids in understanding pathophysiology and prognosis.
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