Retraction.

Retraction: "9za plays cytotoxic and proapoptotic roles and induces cytoprotective autophagy through the PDK1/Akt/mTOR axis in non-small-cell lung cancer," by Rangru Liu, Zhuo Chen, Xinan Yi, Fengying Huang, Gaoyun Hu, Danqi Liu, Xi Li, Honghao Zhou, and Zhaoqian Liu, J Cell Physiol. 2019; 20728-20741: The above article, published online on 19 April 2019 in Wiley Online Library (https://doi.org/10.1002/jcp.28679), has been retracted by agreement between the authors, the journal's Editor in Chief, Prof. Dr. Gregg Fields, and Wiley Periodicals LLC. The retraction was agreed after the authors stated that unintentional errors occurred during the research process, and the experimental results cannot be verified.