Neuromuscular disorders : NMD · 2006
Novel spastin (SPG4) mutations in Italian patients with hereditary spastic paraplegia.
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Magariello Angela, Muglia Maria, Patitucci Alessandra, Mazzei Rosalucia, Conforti Francesca Luisa, Gabriele Anna Lia, Sprovieri Teresa, Ungaro Carmine, Gambardella Antonio, Mancuso Michelangelo, Siciliano Gabriele, Branca Damiano, Aguglia Umberto, de Angelis Maria Vittoria, Longo Katia, Quattrone Aldo
Аннотация
Spastic paraplegia type 4 is caused by mutations in the gene that encodes spastin (SPG4), a member of the AAA protein family. A cohort of 34 unrelated Italian patients with pure spastic paraplegia, of which 18 displayed autosomal dominant inheritance and 16 were apparently sporadic, were screened for mutations in the SPG4 gene by denaturing high performance liquid chromatography. We identified a previously reported mutation in a sporadic patient with pure hereditary spastic paraplegia. We also identified eight unrelated patients with pure autosomal dominant hereditary spastic paraplegia carrying five novel mutations in the SPG4 gene (one missense mutation, c.1304 C>T; one nonsense mutation, c.807C>A; two frameshift mutations, c.1281dupT, c.1514_1515insATA; and one splicing mutation, c.1322-2A>C). The frequency for SPG4 mutations detected in autosomal dominant hereditary spastic paraplegia was 44.4%. This study contributes to expand the spectrum of SPG4 mutations in Italian population.