Spastin related hereditary spastic paraplegia with dysplastic corpus callosum

Thin corpus callosum has been recently observed in two patients with an autosomal dominant trait of hereditary spastic paraplegia (HSP) linked to a novel mutation in the spastin gene (SPG4). In the same two patients cerebellar atrophy has been found. Reportedly, in other members of the same family,...

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Bibliographic Details
Published in:Journal of the neurological sciences 2005-09, Vol.236 (1), p.9-12
Main Authors: Alber, Burkhard, Pernauer, Magdalena, Schwan, Annemarie, Rothmund, Gabriele, Hoffmann, Karl T., Brummer, Dagmar, Sperfeld, Anne D., Uttner, Ingo, Binder, Heinrich, Epplen, Joerg T., Dullinger, Jörn, Ludolph, Albert C., Meyer, Thomas
Format: Article
Language:English
Subjects:
Adenosine Triphosphatases - genetics
Adult
Biological and medical sciences
Corpus callosum
Corpus Callosum - pathology
DNA Mutational Analysis - methods
Dysplasia
Family Health
Female
Hereditary spastic paraplegia
Humans
Magnetic Resonance Imaging - methods
Male
Medical sciences
Middle Aged
Muscle
Neurology
Pharmacology. Drug treatments
Phenotype
Pneumology
Polymorphism, Genetic
Spastic Paraplegia, Hereditary - genetics
Spastic Paraplegia, Hereditary - pathology
Spastin
SPG4
Tumors of the respiratory system and mediastinum
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Summary:Thin corpus callosum has been recently observed in two patients with an autosomal dominant trait of hereditary spastic paraplegia (HSP) linked to a novel mutation in the spastin gene (SPG4). In the same two patients cerebellar atrophy has been found. Reportedly, in other members of the same family, there has been a variable presence of mental retardation. We report on the clinical and genetic investigation of an Austrian family with a novel mutation in the spastin gene. Genetic analysis of the SPG4 locus revealed a mutation (C1120A) and a known intronic polymorphism (996-47G > A) of the spastin gene. In one affected family member, previously undescribed dysplasia of the corpus callosum (CC) was found in conjunction with otherwise uncomplicated HSP. Dysplastic CC was not paralleled with cortical atrophy, cognitive impairment or other phenotypic variations. Two further affected family members showed the same mutation and polymorphism, but no evidence of CC abnormalities. We conclude that apparently pure HSP may present with MRI features of dysplastic CC. This finding extended the spastin-related phenotype which is distinct from previous reports of thin CC in HSP.
ISSN:0022-510X
1878-5883
DOI:10.1016/j.jns.2005.03.040