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

“Genome-Wide Association Study and Transcriptome Analysis Provide New Insights into the White/Red Earlobe Color Formation in Chicken”
[Cell Physiol Biochem 2018;46:1768-1778; DOI: 10.1159/000489361]
by Wei Luo, Jiguo Xu, Zhenhui Li, Haiping Xu, Shudai Lin, Jiaying Wang, Hongjia Ouyang, Qinghua Nie and Xiquan Zhang.

After publication of this article, the authors identified errors in the genotyping data and sample size description that affect some of the conclusions of the article. The authors contacted the journal when these errors were discovered. While the matter is being investigated, readers should interpret the results presented in the article with caution. Appropriate editorial action will be taken once the investigation is concluded.