However, recent studies in our laboratory demonstrated that the schizophrenia-associated DNA sequence polymorphisms in GABRB2 are correlated with under-expression in schizophrenic brains of two alternatively spliced forms of mRNA coding for two previously reported isoforms of β2 subunit that differ in length by 38 amino acid residues including a potential Ser/Thr phosphorylation site [12]. Here, GABRB2 is linked to schizophrenia.