A novel relationship for schizophrenia, bipolar and major depressive disorder Part 7: A hint from chromosome 7 high density association screen

Behav Brain Res. 2015 Oct 15;293:241-51. doi: 10.1016/j.bbr.2015.06.043. Epub 2015 Jul 17.


Convergent evidence from genetics, symptology and psychopharmacology imply that there are intrinsic connection between schizophrenia (SCZ), bipolar disorder (BPD) and major depressive disorder (MDD). Also, any two or even three of these disorders could co-existe in some families. A total of 47,144 single nucleotide polymorphism (SNPs) on chromosome 7 were genotyped by Affymetrix Genome-Wide Human SNP array 6.0 on 119 SCZ, 253 BPD (type-I), 177 MDD, and 1000 controls. Associated SNP loci were comprehensively revealed and outstanding susceptibility genes were identified including CNTNAP2. a neurexin family gene. Unexpectedly, flanking genes for up to 94.74 % of of the associated SNPs were replicated (P≤9.9 E-8) in an enlarged cohort of 986 SCZ patients. Considering other convergent evidence, our results further implicate that BPD and MDD are subtypes of SCZ.

Keywords: Association; Bipolar disorder; Gene; Major depressive disorder; Schizophrenia; Subtype.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Bipolar Disorder / genetics*
  • Chromosomes, Human, Pair 7 / genetics*
  • Depressive Disorder, Major / genetics*
  • Female
  • Gene Expression Profiling
  • Genetic Predisposition to Disease / genetics*
  • Genome-Wide Association Study
  • Genotype
  • Humans
  • Male
  • Membrane Proteins
  • Middle Aged
  • Nerve Tissue Proteins
  • Oligonucleotide Array Sequence Analysis
  • Polymorphism, Single Nucleotide / genetics*
  • Schizophrenia / genetics*
  • Young Adult


  • CNTNAP2 protein, human
  • Membrane Proteins
  • Nerve Tissue Proteins