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Novel de novo nonsense mutation of MECP2 in a patient with Rett syndrome

✍ Scribed by Soo-Jeong Kim; Edwin H. Cook Jr.

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 35 KB
Volume: 15
Category: Article
ISSN: 1059-7794
DOI: 10.1002/(sici)1098-1004(200004)15:4<382::aid-humu16>3.0.co;2-8

No coin nor oath required. For personal study only.

✦ Synopsis

Because of the recent identification of several mutations of methyl-CpG-binding protein 2 (MECP2) in patients with Rett syndrome (RTT), a patient with suspected RTT from an autism clinic was screened for mutations. She was found to have a novel heterozygous nonsense mutation, 129C>T (Q19X), which leads to the most severely truncated MECP2 protein reported to date. Sequencing of parental DNA revealed the mutation was de novo. The patient was not affected with microcephaly or hyperventilation, but had other features of Rett syndrome including severe mental retardation and symptoms of autistic disorder. Moderately skewed X-chromosome inactivation (XCI) may have contributed to her relatively mild phenotype.

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