Nature Communications 5: Article number: 3756 (2014); Published: 29 April 2014; Updated: 26 June 2014; Updated: 10 October 2014.

The financial support for this Article was not fully acknowledged. The Acknowledgements should have included the following: Anne Kiltie was funded by the Cancer Research UK programme grant C5255/A15935. Jean-Baptiste Cazier’s activity as a core leader is funded by Cancer Research UK. Support for sample biobanking was provided by the Cancer Research UK Oxford Cancer Research Centre (OCRC).