The Publisher and Editor are issuing an Expression of Concern on the article titled “MiR-140 Expression Regulates Cell Proliferation and Targets PD-L1 in NSCLC.” [Cellular Physiology and Biochemistry 24 April 2018; 46 (2): 654–663. https://doi.org/10.1159/000488634] by Wei-Bin Xie, Li-Hui Liang, Kai-Ge Wu, Le-Xing Wang, Xin He, Cheng Song, Yun-Qi Wang, and Yun-Hui Li.
After publication of this article, concerns were raised about the integrity of some of the data presented as well as the authorship of this article. The authors did not respond to our correspondence within the given timeframe and the matter has been raised to the corresponding author‘s institution. Readers should thus interpret the data presented in the article with caution. Appropriate editorial action will be taken once the investigation is concluded.