The Editorial Office has been made aware of potential issues surrounding the scientific validity of this paper “HER2 decreases drug sensitivity of ovarian cancer cells via inducing stem cell-like property in an NFκB-dependent way” DOI: 10.1042/BSR20180829, hence has issued an expression of concern to notify readers whilst the Editorial Office investigates. It has been noted that Figure 1E HER2 OE panel seems to appear in a previous publication by Liu et al, 2018 (DOI: 10.1158/0008-5472.can-17-2761), with colour and scalebar modifications. Additionally, the Editorial Office has concerns surrounding similarities in the histological appearance of Figure 6A + and +++ panels. The authors were contacted regarding the concerns, however so far the Editorial Office has not received a response.

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