Specific loss of MeCP2 in GABAergic interneurons – parvalbumin, somatostatin, vasoactive intestinal peptide (separate or combined) - was not associated with a change in anxiety behaviour (Ito-Ishida et al., 2015; He et al., 2014; Mossner et al., 2020). The gene discussed is MECP2; the disease is Anxiety.