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Wolfram syndrome in a family with variable expression.
A Kadayifci1, Y Kepekci, Y Coskun
1Department of Internal Medicine, Gaziantep University, Faculty of Medicine, Turkey. kadayifci@gantep.edu.tr
Acta Medica (Hradec Kralove)
|January 29, 2002
Summary
Wolfram syndrome, a rare neurodegenerative disorder, is linked to a specific gene mutation. This study shows that carriers of this mutation may exhibit milder symptoms, such as sensorineural deafness alone.
Area of Science:
- Genetics
- Neurodegenerative Disorders
- Ophthalmology
Background:
- Wolfram syndrome is a rare autosomal recessive neurodegenerative disorder.
- Key features include diabetes mellitus and optic atrophy.
- Other common manifestations are diabetes insipidus, deafness, and neurological issues.
Observation:
- This study investigated a family with Wolfram syndrome.
- Two siblings presented with the full spectrum of Wolfram syndrome.
- A third sibling exhibited only sensorineural deafness.
Findings:
- DNA analysis identified homozygosity for a point mutation on chromosome 4p in affected siblings.
- The sibling with isolated deafness was a heterozygote carrier for the same mutation.
- This suggests a genotype-phenotype correlation and potential for varied expressivity.
Implications:
- Understanding carrier states can aid in genetic counseling for Wolfram syndrome.
- Phenotypic variations in heterozygote carriers warrant further investigation.
- This research contributes to the understanding of Wolfram syndrome's genetic basis and clinical spectrum.