Because the GABAergic system is dysfunctional in these disorders (Kelemen et al., 2013) and the lack of FMRP affects the expression of some GABA receptor subunits (D'Hulst and Kooy, 2007), it is reasonable to hypothesize that FMRP reduction might explain the alterations of proteins associated with the GABAergic system in these different neurological diseases. The gene discussed is FMR1; the disease is nervous system disorder.