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Authors
Ogawa, Haruki
Abe, Hiroyuki
Yagi, Koichi
Baba, Yoshifumi
Seto, Yasuyuki
Ushiku, Tetsuo https://orcid.org/0000-0002-1763-8380
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Funding
Funding for this research was provided by:
Japan Society for the Promotion of Science (JP24K02248, JP23K06458)
The University of Tokyo
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Article History
Received: 13 June 2025
Revised: 27 July 2025
Accepted: 13 August 2025
First Online: 30 August 2025
Declarations
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: This study was performed according to the Declaration of Helsinki, and the study protocol was approved by the institutional review board (approval number 10461–13). The requirement to obtain written informed consent was waived because this was a retrospective study using existing pathology slides and formalin-fixed, paraffin-embedded blocks. Instead, we used an opt-out approach to provide participants with an informed choice about participation.
: The anti-FGFR2b antibody (clone mFR2-10b) was provided by Daiichi-Sankyo Co., Ltd. This study was carried out independently by the authors, without any involvement from Daiichi Sankyo Co., Ltd. The authors declare no other conflicts of interest related to this study.
