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Items: 4

1.

Familial febrile seizures 8

MedGen UID:
370755
Concept ID:
C1969810
Disease or Syndrome
2.

Generalized epilepsy with febrile seizures plus 3

Mutations in the GABRG2 gene cause a spectrum of seizure disorders, ranging from early-onset isolated febrile seizures to generalized epilepsy with febrile seizures plus, type 3, which represents a more severe phenotype. Patients with isolated febrile seizures usually have onset in the first year of life and show spontaneous remission by age 6 years, whereas patients with GEFS+ continue to have various types of febrile and afebrile seizures later in life (summary by Singh et al., 1999). Mutation in the GABRG2 gene can also cause childhood absence epilepsy (ECA2; 607681). Mutations in certain genes can cause a phenotypic spectrum of overlap between the isolated febrile phenotype and the GEFS+ phenotype. For a general phenotypic description and a discussion of genetic heterogeneity of GEFS+, see 604233. For a phenotypic description and a discussion of genetic heterogeneity of familial febrile seizures, see 121210. [from OMIM]

MedGen UID:
347692
Concept ID:
C1858674
Disease or Syndrome
3.

Epilepsy, childhood absence 2

MedGen UID:
334707
Concept ID:
C1843244
Disease or Syndrome
4.

Epilepsy, childhood absence 1

Childhood absence epilepsy (CAE, ECA), a subtype of idiopathic generalized epilepsy (EIG; 600669), is characterized by a sudden and brief impairment of consciousness that is accompanied by a generalized, synchronous, bilateral, 2.5- to 4-Hz spike and slow-wave discharge (SWD) on EEG. Seizure onset occurs between 3 and 8 years of age and seizures generally occur multiple times per day. About 70% of patients experience spontaneous remission of seizures, often around adolescence. There are no structural neuropathologic findings in patients with ECA (Crunelli and Leresche, 2002). Genetic Heterogeneity of Susceptibility to Childhood Absence Epilepsy The ECA1 locus has been mapped to chromosome 8q24; see also EIG1 (see 600669), which also maps to 8q24. Susceptibility to the development of childhood absence epilepsy may be conferred by variation in several genes: ECA2 (607681), conferred by variation in the GABRG2 gene (137164) on chromosome 5q31.1; ECA4 (611136), conferred by variation in the GABRA1 gene (137160) on chromosome 5q34; ECA5 (612269), conferred by variation in the GABRB3 gene (137192) on chromosome 15q12; and ECA6 (see 611942), conferred by variation in the CACNA1H gene (607904) on chromosome 16p13. See EIG11 (607628) for discussion of a locus previously designated ECA3 on chromosome 3q26. [from OMIM]

MedGen UID:
325057
Concept ID:
C1838604
Disease or Syndrome
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