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Legius Syndrome: two novel mutations in the SPRED1 gene.


ABSTRACT: The SPRED1 gene encodes a protein involved in the Ras/MAPK (mitogen-activated protein kinase) signaling pathway. Mutations in SPRED1 have been reported to cause Legius Syndrome, a rare developmental disorder that shares some clinical features with Neurofibromatosis-1. Direct sequencing was used to define SPRED1 mutations. We present two previously undescribed mutations: a frameshift mutation causing a stop codon, which was identified in an Italian family (p.Ile60Tyrfs*18) and a missense variation, which was identified in one sporadic Italian case (p.Pro422Arg). Our results led us to hypothesize that these modifications may contribute to the Legius Syndrome phenotype. Further studies will be needed to determine the roles of these mutations in the mechanisms of Legius Syndrome.

SUBMITTER: Bianchi M 

PROVIDER: S-EPMC4785569 | biostudies-other | 2015

REPOSITORIES: biostudies-other

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Legius Syndrome: two novel mutations in the SPRED1 gene.

Bianchi Marika M   Saletti Veronica V   Micheli Roberto R   Esposito Silvia S   Molinaro Anna A   Gagliardi Stella S   Orcesi Simona S   Cereda Cristina C  

Human genome variation 20151203


The SPRED1 gene encodes a protein involved in the Ras/MAPK (mitogen-activated protein kinase) signaling pathway. Mutations in SPRED1 have been reported to cause Legius Syndrome, a rare developmental disorder that shares some clinical features with Neurofibromatosis-1. Direct sequencing was used to define SPRED1 mutations. We present two previously undescribed mutations: a frameshift mutation causing a stop codon, which was identified in an Italian family (p.Ile60Tyrfs*18) and a missense variatio  ...[more]

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