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Published on: March 4, 2014
Early onset facioscapulohumeral muscular dystrophy
O F Brouwer1, G W Padberg, E Bakker
1Department of Neurology, Leiden University, Leiden, The Netherlands.
Muscle & Nerve. Supplement
|April 12, 2013
Summary
Early-onset facioscapulohumeral muscular dystrophy (FSHD) presents similarly to typical FSHD in both clinical and genetic aspects. This study found that infantile-onset FSHD shares common symptoms and genetic markers with later-onset forms of the disease.
Area of Science:
- Genetics
- Neurology
- Molecular Biology
Background:
- Facioscapulohumeral muscular dystrophy (FSHD) is a genetic disorder characterized by progressive muscle weakness.
- Early-onset FSHD, while less common, presents unique diagnostic and research challenges.
- Understanding the genetic and clinical spectrum of early-onset FSHD is crucial for patient management.
Purpose of the Study:
- To investigate the clinical and genetic characteristics of patients with early-onset facioscapulohumeral muscular dystrophy (FSHD).
- To compare the presentation and genetic findings of infantile-onset FSHD with typical FSHD.
- To assess the utility of Southern blotting in diagnosing early-onset FSHD.
Main Methods:
- Case study of 10 patients (5 familial, 5 sporadic) with early-onset FSHD.
- Clinical assessment of symptoms including facial and shoulder girdle weakness.
- Southern blotting using the p13E-11 probe to analyze DNA.
Main Results:
- All 10 patients exhibited symptoms consistent with FSHD, with onset in early infancy.
- Southern blotting revealed abnormal EcoRI fragments (13-22 kb) in 6 out of 7 tested patients.
- Clinical presentation and genetic findings were comparable to those observed in typical FSHD.
Conclusions:
- Early-onset FSHD is clinically and genetically similar to regular FSHD.
- Southern blotting is a valuable diagnostic tool for early-onset FSHD.
- The underlying mechanisms for the wide clinical variability in FSHD remain to be elucidated.
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