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  • Title: [Molecular genetics and gene analysis of hereditary spastic paraplegia].
    Author: Ishiura H.
    Journal: Rinsho Shinkeigaku; 2014; 54(12):1016-7. PubMed ID: 25672695.
    Abstract:
    Hereditary spastic paraplegia (HSP) is a neurodegenerative disorder which is characterized by spasticity of the leg. HSP is a clinically and genetically heterogeneous disorder. Mutations were detected in about 60% of autosomal dominant HSP patients. SPG4 is the most common form of autosomal dominant HSP worldwide. In autosomal recessive HSP patients, we detected mutations in about 40% using exome sequencing. Causes of autosomal recessive HSP are more heterogeneous than those of autosomal dominant HSP. We have to consider leukodystrophies/leukoencephalopathies, motor neuron diseases, spinocerebellar degenerations, or various metabolic diseases as differential diagnosis of complicated HSP. X-linked HSP or HSP with mitochondorial inheritance are rare. Further work on familial patients would lead to identify novel causative genes, which helps to understand pathophysiology of HSP and the nature of corticospinal tract and establish disease modifying therapy. Mutation detection rate for sporadic HSP is low at the moment, and molecular delineation of sporadic HSP is expected in the future.
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