Nat. Genet. 46, 528–530 (2014); published online 28 May 2014; corrected after print 13 June 2014

In the version of this article initially published, the following sentence on page 529 referred to an incorrect locus (in bold): “In mice, the lncRNA Kcnq1ot1 associates with G9a and the polycomb repressive complex 2 (PRC2) to regulate the expression of other genes in the Dlk1-Dio3 locus in cis.” The correct locus is Kcnq1. The error has been corrected in the HTML and PDF versions of the article.