SCN8A and epilepsy: Variants in epilepsy‐associated VGSC genes expressed in the central nervous system have also been associated with SUDEP: SCN1A (Cooper et al., 2016; Gal et al., 2010), SCN2A (Howell et al., 2015; Myers et al., 2018), and SCN8A (Johannesen et al., 2018; Myers et al., 2018; Veeramah et al., 2012).