title: Autosomal dominant hereditary spastic paraplegia: report of a large Italian family with R581X spastin mutation.
abstract: We describe a large kindred with a typical pure form of autosomal dominant hereditary spastic paraplegia (ADHSP). On the basis of maximum LOD score of 1.94 at theta (max)=0 with marker D2S367, we obtained suggestive evidence for linkage of ADHSP to SPG4 locus. Denaturing high-performance liquid chromatography (DHPLC) and direct sequence analysis allowed us to identify a nonsense mutation (1741* C>T) in exon 17 of the Spastin gene. This transition, carried by all the affected family members and two apparently healthy individuals, lead to truncation of the last 36 amino acids in the C-terminus of the protein. These results confirm the existence of mutation in the SPG4 gene with a reduced penetrance, indicating that other genetic or environmental factors are required to trigger full-blown disease.
authors: Human Molecular Genetics Unit, San Raffaele Scientific Institute, Milan, Italy.
authors: P
authors: P
authors: Aridon
authors: P
authors: P
authors: Ragonese
authors: M
authors: M
authors: De Fusco
authors: D
authors: D
authors: Lo Coco
authors: G
authors: G
authors: Salemi
authors: G
authors: G
authors: Casari
authors: G
authors: G
authors: Savettieri
mesh_terms: D000251:Adenosine Triphosphatases / Q000235:genetics*; D000328:Adult; D000368:Aged; D001120:Arginine / Q000235:genetics*; D004252:DNA Mutational Analysis; D005192:Family Health; D005260:Female; D005838:Genotype; D006801:Humans; D007558:Italy; D008126:Lod Score; D008297:Male; D008875:Middle Aged; D009154:Mutation / Q000235:genetics*; D015419:Spastic Paraplegia, Hereditary / Q000235:genetics*; D000074181:Spastin
chemical_list: D001120:Arginine; D000251:Adenosine Triphosphatases; D000074181:Spastin; C400283:SPAST protein, human
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