Retraction: Wang C, Chen Z, Ge Q, Hu J, Li F, Hu J, Xu H, Ye Z, Li LC (2014) Up-regulation of p21WAF1/CIP1 by miRNAs and its implications in bladder cancer cells. FEBS Letters 588, 4654–4664. https://doi.org/10.1016/j.febslet.2014.10.037

The above article, published online on November 11, 2014, in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the journal Editor-in-Chief Michael Brunner, FEBS Press, and John Wiley and Sons Ltd. The retraction has been agreed following an investigation into concerns raised by a third party, which revealed inappropriate duplications of image panels in Figs 6B, 7A, and S1C. The authors responded to an inquiry by the publisher and provided images related to the duplicated microscopy images and Western blots. Upon review of the provided images, the editors determined that these images did not provide compelling evidence for the integrity of the underlying data. The editors consider the conclusions substantially compromised and are therefore retracting the paper. The authors disagree with this retraction.