Retraction to: Cancer Cell Int (2020) 20:554 https://doi.org/10.1186/s12935-020-01654-5

The Editors-in-Chief have retracted the article because the authors have been unable to provide documents confirming that ethics approval was obtained for the study. After publication the corresponding author requested a retraction but did not provide any further details. Upon further investigation it was identified that some of the described tumour sizes exceed 12 mm—the maximum size allowed by the UK guidelines. The authors did not respond to any of the concerns raised.

None of the authors have responded to any correspondence from the editor/publisher about this retraction.