Table 1.

Epi4K patient cohorts

Cohort	Patient types (numbers)	References
The Epilepsy Phenome/Genome Project (EPGP)	First-degree relative pairs with IGE or NFE (n = 1,500) Trios with IS (n = 250), LGS (n = 250) or malformations of cortical development (n = 250)	EPGP (2007)
Epilepsy Family Study of Columbia University	Multiplex families with three or more affected patients with IGE or NFE (n = 32)	Ottman et al. (2005); Ottman and Susser (1992)
The Epilepsy Research Centre, University of Melbourne	Multiplex families with three or more affected patients with IGE or NFE (n = 250)	Marini et al. (2004)
Quebec Familial Epilepsy Study	Multiplex families with three or more affected patients with IGE or NFE (n = 47)	Kinirons et al. (2008)
Childhood Absence Epilepsy Study (CAE)	Singletons with CAE (n = 446)	Glauser et al. (2010)
SANAD and University of Melbourne	Newly diagnosed singletons with 716 IGE (n = 716) or focal epilepsy (n = 1,721) prospectively followed for seizure outcome	Bleck (2007); Marson et al. (2007)
EPIGEN	Singletons with IGE (n = 700) or NFE (n > 3,000)	EPIGEN (2008)

IGE, idiopathic generalized epilepsy; NFE, nonlesional focal epilepsy; IS, infantile spasms; LGS, Lennox-Gastaut syndrome; CAE, childhood absence epilepsy.