Interaction between interleukin 3 and dystrobrevin-binding protein 1 in schizophrenia

T.L. Edwards, X. Wang, Q. Chen, B. Wormly, B. Riley, Francis O'Neill, D. Walsh, M.D. Ritchie, K.S. Kendler, X.N. Chen

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19 Citations (Scopus)


Schizophrenia is a common psychotic mental disorder that is believed to result from the effects of multiple genetic and environmental factors. In this study, we explored gene-gene interactions and main effects in both case-control (657 cases and 411 controls) and family-based (273 families, 1350 subjects) datasets of English or Irish ancestry. Fifty three markers in 8 genes were genotyped in the family sample and 44 markers in 7 genes were genotyped in the case-control sample. The Multifactor Dimensionality Reduction Pedigree Disequilibrium Test (MDR-PDT) was used to examine epistasis in the family dataset and a 3-locus model was identified (permuted p=0.003). The 3-locus model involved the IL3 (rs2069803), RGS4 (rs2661319), and DTNBP1 (rs21319539) genes. We used MDR to analyze the case-control dataset containing the same markers typed in the RGS4, IL3 and DTNBP1 genes and found evidence of a joint effect between IL3 (rs31400) and DTNBP1 (rs760761) (cross-validation consistency 4/5, balanced prediction accuracy=56.84%, p=0.019). While this is not a direct replication, the results obtained from both the family and case-control samples collectively suggest that IL3 and DTNBP1 are likely to interact and jointly contribute to increase risk for schizophrenia. We also observed a significant main effect in DTNBP1, which survived correction for multiple comparisons, and numerous nominally significant effects in several genes. (C) 2008 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)208-217
Number of pages10
JournalSchizophrenia research
Issue number2-3
Publication statusPublished - Dec 2008

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Biological Psychiatry

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    Edwards, T. L., Wang, X., Chen, Q., Wormly, B., Riley, B., O'Neill, F., Walsh, D., Ritchie, M. D., Kendler, K. S., & Chen, X. N. (2008). Interaction between interleukin 3 and dystrobrevin-binding protein 1 in schizophrenia. Schizophrenia research, 106(2-3), 208-217.