Table 1.

Clinical features of affected family members

Affected individualAge (years)Type of afebrile seizuresClinical results
At onset of febrile seizuresAt last febrile seizureEEGMRI
I-2NoneNDNDND
III-227NoneNDND
III-4NDNDNoneNDND
III-9NoneGTCSNDND
IV-227NoneNDND
IV-30.57GTCSNormalNormal
IV-5NDNDGTCSNDND
IV-6112NoneNDND
IV-1017GTCSNormalNormal
IV-11NoneGTCSNormalNormal
V-10.50.5GTCSGeneralized intermittent polymorphic delta slowingNo structural abnormality after anterior 2/3 callosotomy
V-336NoneNDND
  • ND, Not determined; GTCS, generalized tonic clonic seizures.