Evidence for a putative bipolar disorder locus on 2p13-16 and other potential loci on 4q31, 7q34, 8q13, 9q31, 10q21-24, 13q32, 14q21 and 17q11-12

J. Liu, S. H. Juo, A. Dewan, A. Grunn, X. Tong, M. Brito, N. Park, J. E. Loth, K. Kanyas, B. Lerer, J. Endicott, G. Penchaszadeh, J. Knowles, J. Ott, T. C. Gilliam, M. Baron

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117 Scopus citations

Abstract

Bipolar disorder (BP) is a severe and common psychiatric disorder characterized by extreme mood swings. Family, twin and adoption studies strongly support a genetic component. The mode of inheritance is complex and likely involves multiple, as yet unidentified genes. To identify susceptibility loci, we conducted a genome-wide scan with 343 microsatellite markers in one of the largest, well-characterized pedigree samples assembled to date (373 individuals in 40 pedigrees). To increase power to detect linkage, scan statistics were used to examine the logarithm of odds (lod) scores based on evidence at adjacent chromosomal loci. This analysis yielded significant evidence of linkage (genome-wide P<0.05) for markers on 2p13-16. Standard linkage analysis was also supportive of linkage to 2p13-16 (lod=3.20), and identified several other interesting regions: 4q31 (lod=3.16), 7q34 (lod=2.78), 8q13 (lod=2.06), 9q31 (lod=2.07), 10q24 (lod=2.79), 13q32 (lod=2.2), 14q21 (lod=2.36) and 17q11-12 (lod=2.75). In this systematic, large-scale study, we identified novel putative loci for BP (on 2p13-16, 8q13 and 14q21) and found support for previously proposed loci (on 4q31, 7q34, 9q31, 10q21-24, 13q32 and 17q11-12). Two of the regions implicated in our study, 2p13-14 and 13q32, have also been linked to schizophrenia, suggesting that the two disorders may have susceptibility genes in common.

Original languageEnglish (US)
Pages (from-to)333-342
Number of pages10
JournalMolecular psychiatry
Volume8
Issue number3
DOIs
StatePublished - 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Psychiatry and Mental health
  • Cellular and Molecular Neuroscience

Keywords

  • Genetic linkage
  • Genome scan
  • Manic depression
  • Susceptibility loci

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