A Systematic Genomewide Linkage Study in 353 Sib Pairs with Schizophrenia

N. M. Williams, N. Norton, H. Williams, B. Ekholm, M. L. Hamshere, Y. Lindblom, K. V. Chowdari, A. G. Cardno, S. Zammit, L. A. Jones, K. C. Murphy, R. D. Sanders, G. McCarthy, M. Y. Gray, G. Jones, P. Holmans, V. Nimgaonkar, R. Adolfson, U. Ösby, L. TereniusG. Sedvall, M. C. O'Donovan, M. J. Owen

Research output: Contribution to journalArticlepeer-review

105 Scopus citations

Abstract

We undertook a genomewide linkage study in a total of 353 affected sib pairs (ASPs) with schizophrenia. Our sample consisted of 179 ASPs from the United Kingdom, 134 from Sweden, and 40 from the United States. We typed 372 microsatellite markers at ∼10-cM intervals. Our strongest finding was a LOD score of 3.87 on chromosome 10q25.3-q26.3, with positive results being contributed by all three samples and a LOD-1 interval of 15 cM. This finding achieved genomewide significance (P < .05), on the basis of simulation studies. We also found two regions, 17p11.2-q25.1 (maximum LOD score [MLS] = 3.35) and 22q11 (MLS = 2.29), in which the evidence for linkage was highly suggestive. Linkage to all of these regions has been supported by other studies. Moreover, we found strong evidence for linkage (genomewide P < .02) to 17p11.2-q25.1 in a single pedigree with schizophrenia. In our view, the evidence is now sufficiently compelling to undertake detailed mapping studies of these three regions.

Original languageEnglish (US)
Pages (from-to)1355-1367
Number of pages13
JournalAmerican journal of human genetics
Volume73
Issue number6
DOIs
StatePublished - Dec 2003

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

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