<P>PROBLEM TO BE SOLVED: To identify a schizophrenia-related gene useful in diagnosing schizophrenia, and to establish the application of the gene or a polypeptide encoded by the same. <P>SOLUTION: The gene which is useful as a diagnostic for schizophrenia comprises at least one polynucleotide selected from the group consisting of polynucleotides represented by sequence No.1, sequence No.3 and sequence No.5 (See the Specification) respectively and polynucleotides having sequences complementary to the above sequences respectively. <P>COPYRIGHT: (C)2004,JPO 
SCHIZOPHRENIA-RELATED GENE