This Expression of Concern relates to the article ‘Chromosomal breaks during mitotic catastrophe trigger γH2AX–ATM–p53-mediated apoptosis’ by Gabriela Imreh, Helin Vakifahmetoglu Norberg, Stefan Imreh and Boris Zhivotovsky. J. Cell Sci. (2011) 1242951-2963 (doi: 10.1242/jcs.081612).

Concerns have been raised regarding some of the data in Fig. 1A of the above-named paper. Journal of Cell Science is publishing this note to make readers aware of this issue, and we will provide further information once the issue has been resolved.

This course of action follows the advice set out by COPE (Committee on Publication Ethics), of which Journal of Cell Science is a member.