کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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3037979 | 1184440 | 2009 | 4 صفحه PDF | دانلود رایگان |
Mutations in the Aristaless-related homeobox (ARX) gene are associated with pleiotropic phenotypes including infantile spasms, mental retardation and dystonia. However, relatively consistent genotype–phenotype correlations have been emphasized in prior reports. We report a boy presenting with mental retardation, tonic seizures and dystonia but without infantile spasms. Gene sequencing detected an additional seven GCG repeats in the first polyalanine tract of the ARX gene, a mutation which leads to an expansion of the normal 16 alanine residues to 23. The same ARX gene mutation has been reported in patients with infantile spasms, but was absent in the present case. This finding highlights the diverse phenotypic spectrum that may result from ARX gene mutations.
Journal: Brain and Development - Volume 31, Issue 6, June 2009, Pages 469–472