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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.2026.15889</article-id>
<article-id pub-id-type="publisher-id">OL-32-5-15889</article-id>
<article-categories>
<subj-group>
<subject>Expression of Concern</subject>
</subj-group>
</article-categories>
<title-group>
<article-title>[Expression of Concern] Reduced migration of Ishikawa cells associated with downregulation of aquaporin-5</article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author"><name><surname>Jiang</surname><given-names>Xiu Xiu</given-names></name>
</contrib>
<contrib contrib-type="author"><name><surname>Xu</surname><given-names>Kai Hong</given-names></name>
</contrib>
<contrib contrib-type="author"><name><surname>Ma</surname><given-names>Jun Yan</given-names></name>
</contrib>
<contrib contrib-type="author"><name><surname>Tian</surname><given-names>Yong Hong</given-names></name>
</contrib>
<contrib contrib-type="author"><name><surname>Guo</surname><given-names>Xiao Yan</given-names></name>
</contrib>
<contrib contrib-type="author"><name><surname>Lin</surname><given-names>Jun</given-names></name>
</contrib>
<contrib contrib-type="author"><name><surname>Wu</surname><given-names>Rui Jin</given-names></name>
</contrib>
</contrib-group>
<pub-date pub-type="collection"><month>11</month><year>2026</year></pub-date>
<pub-date pub-type="epub"><day>30</day><month>09</month><year>2026</year></pub-date>
<volume>32</volume>
<issue>5</issue>
<elocation-id>534</elocation-id>
<permissions>
<copyright-statement>Copyright: &#x00A9; 2026 Xiu et al.</copyright-statement>
<copyright-year>2026</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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<body>
<p>Oncol Lett 4: <related-article xmlns:xlink="http://www.w3.org/1999/xlink" related-article-type="object-of-concern" vol="4" page="257" id="RA1" xlink:href="10.3892/ol.2012.738" ext-link-type="doi">257&#x2013;261</related-article>, 2012; DOI: 10.3892/ol.2012.738</p>
<p>Following the publication of this paper, it was drawn to the Editor&#x0027;s attention by a concerned reader that, regarding the images of AQP5-expressing Ishikawa cells shown in Fig. 1 on p. 259, the &#x2018;Blank/72 h&#x2019; and &#x2018;Control/72 h&#x2019; data panels contained an overlapping section of data, suggesting that these images had been derived from the same original source even though the results from differently performed experiments were intended to have been portrayed.</p>
<p>The authors have been contacted by the Editorial Office to offer an explanation for the apparently erroneous assembly of the data in Fig. 1, and we are awaiting their response. Owing to the fact that the Editorial Office has been made aware of potential issues surrounding the scientific integrity of this paper, we are issuing an Expression of Concern to notify readers of this potential problem while the Editorial Office continues to investigate this matter further.</p>
</body>
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