RETRACTED ARTICLE: Circular RNA protein tyrosine kinase 2 (circPTK2) promotes colorectal cancer proliferation, migration, invasion and chemoresistance

We, the Editors and Publisher of the journal Bioengineered, have retracted the following article:

Zhipeng Jiang, Zehui Hou, Wei Liu, Zhuomin Yu, Zhiqiang Liang & Shuang Chen (2022) Circular RNA protein tyrosine kinase 2 (circPTK2) promotes colorectal cancer proliferation, migration, invasion and chemoresistance, Bioengineered, 13:1, 810-823, DOI: 10.1080/21655979.2021.2012952

Since publication, concerns have been raised about the integrity of the data in the article. When approached for an explanation, the authors have been unable to satisfactorily address the concerns raised and have not been able to provide their original data in the appropriate format. As verifying the validity of published work is core to the integrity of the scholarly record, we are therefore retracting the article. The corresponding author listed in this publication has been informed. The authors do not agree with the retraction.

We have been informed in our decision-making by our editorial policies and the COPE guidelines.

The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as ‘Retracted’.