Nat. Cell Biol. 17, 856–867 (2015); published online 22 June 2015; corrected after print 10 August 2015

In the version of this Article originally published, panels from Fig. 8e were mistakenly reproduced as Fig. 6g. The correct panels for Fig. 6g (KS/Jdp2-iPSC) are shown here and have been amended in all online versions of the Article.