SPG20 is mutated in Troyer syndrome,an hereditary spastic paraplegia |
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| Authors: | Patel Heema Cross Harold Proukakis Christos Hershberger Ruth Bork Peer Ciccarelli Francesca D Patton Michael A McKusick Victor A Crosby Andrew H |
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| Institution: | Department of Medical Genetics, St. George's Hospital Medical School, University of London, Cranmer Terrace, London SW17 0RE, UK. |
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| Abstract: | Troyer syndrome (TRS) is an autosomal recessive complicated hereditary spastic paraplegia (HSP) that occurs with high frequency in the Old Order Amish. We report mapping of the TRS locus to chromosome 13q12.3 and identify a frameshift mutation in SPG20, encoding spartin. Comparative sequence analysis indicates that spartin shares similarity with molecules involved in endosomal trafficking and with spastin, a molecule implicated in microtubule interaction that is commonly mutated in HSP. |
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