Association analysis of gamma2 subunit of gamma-aminobutyric acid (GABA) type A receptor and voltage-gated sodium channel type II alpha-polypeptide gene mutation in southern Chinese children with febrile seizures.
We attempted to identify the prevalence of the R188W mutation of the SCN2A gene and the K289M mutation and single-nucleotide polymorphism rs211014 of the GABRG2 gene in children of southern China who have febrile seizures. Neither mutation was found in our subjects. The single-nucleotide polymorphism rs211014 AA genotype was overrepresented in the febrile-seizures group compared with controls (62.4% vs 29.0%). The single-nucleotide polymorphism rs211014 A allele was higher in the febrile-seizures group (P < .005). Compared with the single-nucleotide polymorphism rs211014 CC genotype, the odds ratio for developing febrile seizures in individuals with the single-nucleotide polymorphism rs211014 AA genotype was 4.05 (P < .005). A new mutation of C-to-T transition was found at nucleotide 81719 of the GABRG2 gene in a 5-year-old boy, suggesting that the above mutations may not be the main disease mutations. The single-nucleotide polymorphism rs211014 A allele may predict susceptibility to febrile seizures.
Xiumin Wang
Children's Hospital of Zhejiang University School of Medicine, Hangzhou, China.
Meichun Xu
Lizhong Du
D001120:Arginine / Q000235:genetics; D016009:Chi-Square Distribution; D002648:Child; D002675:Child, Preschool; D002681:China / Q000453:epidemiology / Q000208:ethnology; D004252:DNA Mutational Analysis; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D007223:Infant; D008239:Lysine / Q000235:genetics; D008297:Male; D008715:Methionine / Q000235:genetics; D009154:Mutation; D062551:NAV1.2 Voltage-Gated Sodium Channel; D009419:Nerve Tissue Proteins / Q000235:genetics*; D020641:Polymorphism, Single Nucleotide; D011963:Receptors, GABA-A / Q000235:genetics*; D003294:Seizures, Febrile / Q000235:genetics*; D015222:Sodium Channels / Q000235:genetics*; D014364:Tryptophan / Q000235:genetics
C495710:GABRB2 protein, human; D062551:NAV1.2 Voltage-Gated Sodium Channel; D009419:Nerve Tissue Proteins; D011963:Receptors, GABA-A; C568251:SCN2A protein, human; D015222:Sodium Channels; D014364:Tryptophan; D001120:Arginine; D008715:Methionine; D008239:Lysine