Association between genetic variation of CACNA1H and childhood absence epilepsy

Yucai Chen, Jianjun Lu, Hong Pan, Yuehua Zhang, Husheng Wu, Keming Xu, Xiaoyan Liu, Yuwu Jiang, Xinhua Bao, Zhijian Yao, Keyue Ding, Wilson H Y Lo, Boqin Qiang, Piu Chan, Yan Shen, Xiru Wu
Annals of Neurology 2003, 54 (2): 239-43
Direct sequencing of exons 3 to 35 and the exon-intron boundaries of the CACNA1H gene was conducted in 118 childhood absence epilepsy patients of Han ethnicity recruited from North China. Sixty-eight variations have been detected in the CACNA1H gene, and, among the variations identified, 12 were missense mutations and only found in 14 of the 118 patients in a heterozygous state, but not in any of 230 unrelated controls. The identified missense mutations occurred in the highly conserved residues of the T-type calcium channel gene. Our results suggest that CACNA1H might be an important susceptibility gene involved in the pathogenesis of childhood absence epilepsy.

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