The major “ A” allele is associated with:

  • resistance to anti-epileptic drugs (R), but not in Han Chinese (R).

  • haplotypes containing A-alleles were also associated with drug resistance (R).

  • drug resistance to AEDs including phenytoin in Chinese epileptics (R).

rs2304016

Parent Gene: SCN2A

Importance: 2
Less common allele: G = 2%
More common allele: A = 98%
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