Nat. Genet. 48, 777–784 (2016); published online 23 May 2016; corrected after print 6 March 2017

In the version of this article initially published, the name of author Torben Heise was given incorrectly as Thorben Heisse, and the name of author Valérie Cormier-Daire was given incorrectly as Valerie Cormier. The institutional affiliation for Delphine Heron was listed incorrectly as Institut IMAGINE, Hôpital Necker–Enfants Malades, Paris, France, and should have been listed as Département de Génétique Médicale et Centre de Référence Déficiences Intellectuelles, Groupe Hospitalier Pitié-Salpêtrière, Université Pierre et Marie Curie, Paris, France. The errors have been corrected in the HTML and PDF versions of the article.