Novel ATM mutations with ataxia-telangiectasia
Novel ATM mutations with ataxia-telangiectasia
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伴有共济失调毛细血管扩张的新型 ATM 突变
DOI：
10.1016/j.neulet.2015.11.036
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发表时间：
2016-01-12
影响因子：
2.5
通讯作者：
Cao, Li
中科院分区：
文献类型：
--
作者：
Liu, Xiao-Li;Wang, Tian;Cao, Li
Ataxia telangiectasia is an autosomal recessive multisystem disorder characterized by progressive cerebellar ataxia with onset in childhood, oculocutaneous telangiectasia, increased serum alpha-fetoprotein, immunodeficiency, chromosomal instability, and radiation hypersensitivity. Ataxia-telangiectasia mutated gene (ATM) is one of the known genes to be associated with ataxia telangiectasia. We reported the clinical and genetic findings of three early-onset Chinese patients who demonstrated ataxia, oculomotor apraxia, choreoathetosis, myoclonus and telangiectasia of eyes. Sequence analysis of ATM revealed two known nonsense mutations c.8287C>T and c.9139C>T in the siblings. Though the siblings carried the same mutations, they showed different clinical features involving strephenopodia, exotropia, torsion dystonia, myoclonus and extrapyramidal impairments. The other patient was compound heterozygotes for ATM: c.8911C >T and c.7141_7151delAATGGAAAAAT, both of which were not reported previously and not found in 200 control chromosomes. This study widens the spectrum of mutations and phenotypes in ataxia telangiectasia. (C) 2015 Elsevier Ireland Ltd. All rights reserved.
