Nat. Genet. 48, 569–574 (2016); published online 28 March 2016; corrected after print 29 August 2016

In the version of this article initially published, the following statement was not included in the Online Methods: “The results published here are in part based upon data generated by the TARGET initiative managed by the National Cancer Institute (NCI). The RNA-seq data set and clinical information for the TARGET ALL project used for this analysis are available at the database of Genotypes and Phenotypes (dbGaP) under accession phs000218.v13.p3. We also used RNA-seq data from normal blood cells (dbGaP phs000424.v6.p1) generated as part of the GTEx project.” The error has been corrected in the HTML and PDF versions of the article.