Nat. Genet. 47, 73–77 (2015); published online 24 November 2014; corrected after print 6 February 2015

In the version of this article initially published, in Figure 2a, the order of the protein alterations for variants c.1465C>T and c.1480A>G was inverted. The correct protein alterations for these two variants are p.Leu489Phe and p.Ile494Val, respectively. This error has been corrected in the HTML and PDF versions of the article.