DISC1 and myotonic dystrophy: DISC1 and DISC2 genes for schizophrenia are localized at 1q42.1,51 and gene for myotonic dystrophy (CDC42BPA, MRCA, PK-428) localized to 1q42.11.52, 53 Although we did not investigate the expression of these genes, it is likely that haploinsufficiency of this subregion results in decreased expression of the responsible genes for those disorders.