To investigate a possible involvement of expanded triplet repeats of genome
in the genomes of patients with endogenous psychoses, we examined a CAG re
peat polymorphism in the coding region of the KCNN3 gene in schizophrenia,
schizoaffective disorder, bipolar disorder and controls of the Japanese pop
ulation. There were no significant differences in the CAG repeat number of
longer or shorter alleles among the four diagnostic groups or among the sch
izophrenia hebephrenic and paranoid subtypes. (C) 2001 Elsevier Science Ire
land Ltd. All rights reserved.