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<front>
<journal-meta>
<journal-id journal-id-type="publisher-id">OL</journal-id>
<journal-title-group>
<journal-title>Oncology Letters</journal-title>
</journal-title-group>
<issn pub-type="ppub">1792-1074</issn>
<issn pub-type="epub">1792-1082</issn>
<publisher>
<publisher-name>D.A. Spandidos</publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.3892/ol.2025.14861</article-id>
<article-id pub-id-type="publisher-id">OL-29-3-14861</article-id>
<article-categories>
<subj-group>
<subject>Retraction</subject>
</subj-group>
</article-categories>
<title-group>
<article-title>[Retracted] Norcantharidin induces ferroptosis via the suppression of NRF2/HO‑1 signaling in ovarian cancer cells</article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author"><name><surname>Zhu</surname><given-names>Xiaoyan</given-names></name>
</contrib>
<contrib contrib-type="author"><name><surname>Chen</surname><given-names>Xiaohong</given-names></name>
</contrib>
<contrib contrib-type="author"><name><surname>Qiu</surname><given-names>Longshan</given-names></name>
</contrib>
<contrib contrib-type="author"><name><surname>Zhu</surname><given-names>Jianhua</given-names></name>
</contrib>
<contrib contrib-type="author"><name><surname>Wang</surname><given-names>Jiancai</given-names></name>
</contrib>
</contrib-group>
<pub-date pub-type="collection">
<month>03</month>
<year>2025</year></pub-date>
<pub-date pub-type="epub">
<day>07</day>
<month>01</month>
<year>2025</year></pub-date>
<volume>29</volume>
<issue>3</issue>
<elocation-id>129</elocation-id>
<permissions>
<copyright-statement>Copyright: &#x00A9; 2025 Zhu et al.</copyright-statement>
<copyright-year>2025</copyright-year>
<license license-type="open-access">
<license-p>This is an open access article distributed under the terms of the <ext-link ext-link-type="uri" xlink:href="https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution License</ext-link>, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.</license-p></license>
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</front>
<body>
<p>Oncol Lett 24: <related-article xmlns:xlink="http://www.w3.org/1999/xlink" related-article-type="retracted-article" vol="24" page="W359" id="RA1" xlink:href="10.3892/ol.2022.13479" ext-link-type="doi">W359</related-article>, 2022; DOI: 10.3892/ol.2022.13479</p>
<p>Following the publication of this paper, it was drawn to the Editor&#x0027;s attention by a concerned reader that certain of the DCFH-DA-stained cellular data shown in Fig. 2C and D, the flow cytometric data in Fig. 2E and F, and western blotting data shown in Figs. 4C and 5H were strikingly similar to data that had either already appeared in previously published articles written by different authors at different research institutes (one of which has since been retracted), or were featured in an article that was submitted for publication to a different journal at around the same time. Owing to the fact that the contentious data in the above article had already been published prior to its submission to <italic>Oncology Letters</italic>, the Editor has decided that this paper should be retracted from the Journal. After having been in contact with the authors, they accepted the decision to retract the paper. The Editor apologizes to the readership for any inconvenience caused.</p>
</body>
</article>
