The current and former Publishers and the Editor are issuing an Expression of Concern on the article entitled

“S100A4 Knockout Sensitizes Anaplastic Thyroid Carcinoma Cells Harboring BRAFV600E/Mt to Vemurafenib”
[Cell Physiol Biochem 2018;49:1184-1203; DOI: 10.1159/000493296]
by Xuelong Jiao, Hongmei Zhang, Xiangpeng Xu, Ying Yu, Honglai Zhang, Jinna Zhang, Liang Ning, Fengyun Hao, Xinfeng Liu, Min Niu, Chen-Tong Chen, Dong Chen and Kejun Zhang.

After publication of this article, concerns were raised about the integrity of some of the data presented in the article. Readers should thus interpret the data presented in the article with caution while the matter is being investigated. Appropriate editorial action will be taken once the investigation is concluded.