Correction to: Nature Genetics https://doi.org/10.1038/ng.3065, published online 17 August 2014.

In the version of the paper initially published, funding information for author Zsuzsanna Izsvák was missing. The Acknowledgements should have included the sentence ‘Z.I. is funded by European Research Council-2011-ADG-TRANSPOSOstress–294742’.