GABBR2 and epilepsy: Significantly lower expression levels of GABAARα1, GABABR2, NR1, NR2B, and SCN1α genes were observed in the amygdala of patients with an epilepsy duration exceeding 20 years compared to those with epilepsy duration less than 20 years (P ≤ 0.05; Fig. 8A–D).