GLRA2 and autism spectrum disorder: Mutations in GLRA1 underlie development of hyperekplexia – a rare congenital human motor disorder (Shiang et al., 1993); several mutations in GLRA2 have been linked to autism spectrum disorder (Piton et al., 2011; Pilorge et al., 2016; Zhang et al., 2017), and GLRA3 has been implicated in the pathogenesis of temporal lobe epilepsy (Eichler et al., 2008).