Early onset of hypokalaemic periodic paralysis caused by a novel mutation of the CACNA1S gene

被引:23
作者
Chabrier, S. [2 ]
Monnier, N. [1 ,3 ]
Lunardi, J. [1 ,3 ]
机构
[1] CHU Grenoble, Lab Biochim & Genet Mol, F-38043 Grenoble 9, France
[2] Ctr Hosp Univ St Etienne, Dept Med Phys & Readaptat Pediat, St Etienne, France
[3] CHU Grenoble, Ctr Reference Rhone Alpes Malad Neuromusculaires, F-38043 Grenoble 9, France
关键词
D O I
10.1136/jmg.2008.059766
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
We report a precocious and atypical form of hypokalaemic periodic paralysis, with clinical manifestations at birth and first episodes of paralysis occurring as early as 1 year of age, although onset of this disease usually occurs between 5-35 years. Extensive molecular analysis showed that the disease was caused by a novel de novo p. Arg897Ser mutation in the CACNA1S gene. The mutation mapped to a new region of the protein, the S4 voltage sensing segment of domain III, at odds with previously reported mutations that exclusively affected domains II and IV.
引用
收藏
页码:687 / 689
页数:3
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