GABRB2 and schizophrenia: The twin reductions in total β2 expression and long-to-short β2 isoform ratio induced by the schizophrenia susceptibility-enhancing genotypes and haplotypes in the AluYi6AH-151 region of GABRB2 would thus lead to inadequate inhibitory power on account of β2 shortage and diminished long-to-short isoform ratio, and therefore illness.