Retraction to: Cancer Gene Therapy https://doi.org/10.1038/s41417-019-0098-6, published online 11 June 2019

The Editor-in-Chief has retracted this article at the authors’ request. After publication, the authors became aware that some images were misused in Fig. 6d, which resulted in image overlap between the PUMA-KD Control and Cabozantinib groups. The raw data are no longer available. Therefore, the authors have lost confidence in the conclusions drawn in the study.

Shida Yang, **aobing Zhang, Huiling Qu, Bo Qu and **aoxue Yin agree to this retraction. Hongmei Zhao has not responded to any correspondence from the editor or publisher about this retraction.