title: Spastin related hereditary spastic paraplegia with dysplastic corpus callosum.
abstract: 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.
authors: Department of Neurology, University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany.
authors: Burkhard
authors: B
authors: Alber
authors: Magdalena
authors: M
authors: Pernauer
authors: Annemarie
authors: A
authors: Schwan
authors: Gabriele
authors: G
authors: Rothmund
authors: Karl T
authors: KT
authors: Hoffmann
authors: Dagmar
authors: D
authors: Brummer
authors: Anne D
authors: AD
authors: Sperfeld
authors: Ingo
authors: I
authors: Uttner
authors: Heinrich
authors: H
authors: Binder
authors: Joerg T
authors: JT
authors: Epplen
authors: Jörn
authors: J
authors: Dullinger
authors: Albert C
authors: AC
authors: Ludolph
authors: Thomas
authors: T
authors: Meyer
mesh_terms: D000251:Adenosine Triphosphatases / Q000235:genetics*; D000328:Adult; D003337:Corpus Callosum / Q000473:pathology*; D004252:DNA Mutational Analysis / Q000379:methods; D005192:Family Health; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D010641:Phenotype; D011110:Polymorphism, Genetic; D015419:Spastic Paraplegia, Hereditary / Q000235:genetics* / Q000473:pathology; D000074181:Spastin
chemical_list: D000251:Adenosine Triphosphatases; D000074181:Spastin; C400283:SPAST protein, human