α2 subunit - Generalized epilepsy associated with GABRA2 (The International League Against Epilepsy Consortium on Complex Epilepsies, 2018)Collybistin - Hyperekplexia (Striano and Zara, 2017) - Epilepsy (Wang et al., 2018) - Anxiety and aggression (Kalscheuer et al., 2009) - Mental retardation (Shimojima et al., 2011). The gene discussed is GABRA2; the disease is Anxiety.