Nat. Genet. 41, 1088–1093 (2009); published online 6 September; corrected after print 28 September 2009

In the version of this article initially published, the name of the first author of reference 12 was stated incorrectly in the reference list. The correct reference is: “Lambert, J.-C. et al. Genome-wide association study identifies variants at CLU and CR1 associated with Alzheimer's disease. Nat. Genet. advance online publication, doi:10.1038/ng.439 (6 September 2009).” The error has been corrected in the HTML and PDF versions of the article.