Retraction notice to " IP1867B suppresses the Insulin-like Growth Factor 1 Receptor (IGF1R) ablating epidermal growth factor receptor inhibitor resistance in adult high grade gliomas” [Canc. Lett., 458 (2019) pages 29–38]

This article has been retracted at the request of the Editor-in-Chief due to concerns regarding the legitimacy of images and data presented in the paper. Though a corrigendum (Can. Lett. Vol. 469, 2020, pages 524–535) was previously published to address some of these concerns, this corrigendum has also been found to contain errors and therefore cannot stand. Specific concerns are listed below.