Correction to Nature Cell Biology https://doi.org/10.1038/ncb3445, published online 5 December 2016

In the version of this article originally published, the images for H2ax-/- cells under normoxia condition in Supplementary Fig. 2 and the images for H2ax-/- cells under hypoxia for Supplementary Fig. 3 were misplaced. The errors have been corrected in the attached Supplementary Information file.