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Authors
Morimoto, Akemi
Matsumoto, Takashi
Teramoto, Norifumi
Murakami, Sakiko
Usami, Tomoka
Murai, Junko
Sugiyama, Takashi
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Article History
Received: 25 October 2025
Accepted: 7 April 2026
First Online: 23 April 2026
Declarations
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: This retrospective study was approved by the Institutional Review Board of Ehime University Hospital (approval number 2212007). Written informed consent was obtained from participants who were under active follow-up when additional testing of archived tumor tissue was required. For the remaining patients, an opt-out consent process was applied, and study information was disclosed on the hospital’s official website in accordance with the Ethical Guidelines for Medical and Biological Research Involving Human Subjects in Japan. The study was conducted in accordance with the principles of the Declaration of Helsinki.
: Not applicable.
: The authors declare no competing interests.
