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Koichi Takayama

kyoto prefectural university of medicine

75H-index
950Paper Count
2.0WCitation Count
Published Papers 178
Publication Date
Prediction of spread through air spaces with biopsy specimens in early-stage adenocarcinoma of the lung
err2026-07-20
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PREAI
errTomoki Nishimura; Masanori Shimomura; Satoru Okada; Naoko Takeda-Miyata; Tatsuo Furuya; Chiaki Nakazono; Reona Shimegi; Tatsuya Yokota; Koichi Takayama; Satoshi Teramukai; Aya Miyagawa-Hayashino; Masayoshi Inoue
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Gut microbiome-driven modulation of the tumor immune microenvironment optimizes dual checkpoint blockade in advanced non-small-cell lung cancer
err2026-02-16
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errOAAI
errY. Katayama; A. Fukuda; R. Inoue; H. Kawachi; R. Sawada; T. Harada; A. Yoshimura; A. Okada; S. Shiotsu; Y. Chihara; Y. Takemura; T. Yamada; N. Nishioka; M. Iwasaku; S. Tokuda; T. Takagi; S. Kumagai; S. Koyama; K. Takayama; T. Yamada
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Selecting optimal immunotherapy based on inflammation in stage IV PD-L1 ≥50% gene mutation-negative non-small cell lung cancer: pembrolizumab monotherapy versus combination chemoimmunotherapy
err2025-11-30
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PREAI
errKunimatsu, Yusuke; Nishioka, Naoya; Yamada, Tadaaki; Kawachi, Hayato; Tamiya, Motohiro; Negi, Yoshiki; Goto, Yasuhiro; Nakao, Akira; Shiotsu, Shinsuke; Tanimura, Keiko; Takeda, Takayuki; Okada, Asuka; Harada, Taishi; Date, Koji; Chihara, Yusuke; Hasegawa, Isao; Tamiya, Nobuyo; Ishida, Masaki; Kijima, Takashi; Takayama, Koichi
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Impact of the Lung Immune Prognostic Index in non-small-cell lung cancer patients with PD-L1-low/negative tumors receiving chemoimmunotherapy: a real-world multicenter retrospective study
err2025-11-20
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errOAAI
errA. Yoshimura; T. Takeda; K. Tanimura; Y. Chihara; H. Kawachi; Y. Yamanaka; N. Tamiya; R. Honda; T. Yamada; K. Uryu; S. Shiotsu; H. Yoshioka; T. Yamada; T. Kurata; K. Takayama
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Efficacy and Safety of Chemoimmunotherapy in Patients With Advanced Non-small Cell Lung Cancer With Pre-existing Interstitial Pneumonia and Low PD-L1 Expression
err2025-11-01
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PREAI
errSasada, Aosa; Kawachi, Hayato; Yamada, Tadaaki; Hata, Tae; Goto, Yasuhiro; Amano, Akihiko; Negi, Yoshiki; Watanabe, Satoshi; Furuya, Naoki; Oba, Tomohiro; Ikoma, Tatsuki; Nakao, Akira; Tanimura, Keiko; Taniguchi, Hirokazu; Yoshimura, Akihiro; Fukui, Tomoya; Murata, Daiki; Kaira, Kyoichi; Shiotsu, Shinsuke; Okada, Asuka; Chihara, Yusuke; Kijima, Takashi; Takayama, Koichi
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Immune checkpoint inhibitor-induced interstitial lung disease with and without CTLA-4 regimen in non-small cell lung cancer patients and PD-L1 < 1 %: A multicenter, retrospective study
err2025-09-26
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PREAI
errDaiki Murata; Koichi Azuma; Kenta Murotani; Kazuhiro Ito; Takashi Nomizo; Kazuhiko Yamada; Tatsuya Imabayashi; Kentaro Iwanaga; Kenji Chibana; Takayo Ota; Yuuya Nishii; Akira Nakao; Asuka Okada; Kosuke Hamai; Keiko Tanimura; Kohei Yoshimine; Yosuke Tamura; Ryuichiro Takaki; Yasuhiro Goto; Makoto Hibino; Tomohiro Oba; Toshiyuki Sumi; Hiroyasu Kaneda; Naoya Nishioka; Tadaaki Yamada; Koichi Takayama
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Real-world treatment outcomes before and after chemoimmunotherapy approval in EGFR-mutant NSCLC after EGFR-TKI failure: a Japanese cohort study
err2025-07-22
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PREAI
errKenji Morimoto; Tadaaki Yamada; Naoki Furuya; Hisashi Tanaka; Akihiro Yoshimura; Tomohiro Oba; Makoto Hibino; Takahito Fukuda; Yasuhiro Goto; Akira Nakao; Shinsuke Ogusu; Yuta Okazaki; Taishi Harada; Takayo Ota; Ken Masubuchi; Koji Mikami; Tae Hata; Shoki Matsumoto; Ryoichi Honda; Koji Date; Yusuke Chihara; Koichi Takayama
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Epidemiology and clinical course of large cell neuroendocrine carcinoma of the lung: The Japanese lung cancer registry study
err2025-06-01
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PREAI
errShirai, Yukina; Shukuya, Takehito; Asao, Tetsuhiko; Takahashi, Kazuhisa; Shintani, Yasushi; Sekine, Ikuo; Takayama, Koichi; Inoue, Akira; Okamoto, Isamu; Kawaguchi, Tomoya; Yamamoto, Nobuyuki; Miyaoka, Etsuo; Yoshino, Ichiro; Date, Hiroshi
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Clinical impact of cancer cachexia on the outcome of patients with non-small cell lung cancer with PD-L1 tumor proportion scores of ≥50% receiving pembrolizumab monotherapy versus immune checkpoint inhibitor with chemotherapy
err2024-12-16
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errOAAI
errKawachi, Hayato; Yamada, Tadaaki; Tamiya, Motohiro; Negi, Yoshiki; Kijima, Takashi; Goto, Yasuhiro; Nakao, Akira; Shiotsu, Shinsuke; Tanimura, Keiko; Takeda, Takayuki; Okada, Asuka; Harada, Taishi; Date, Koji; Chihara, Yusuke; Hasegawa, Isao; Tamiya, Nobuyo; Katayama, Yuki; Nishioka, Naoya; Morimoto, Kenji; Iwasaku, Masahiro; Tokuda, Shinsaku; Shimose, Takayuki; Takayama, Koichi
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A 5-year review of genomic medicine in breast cancer: insights from C-CAT data on 3776 Japanese patients
err2024-12-04
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PREAI
errMorita, Midori; Tsunashima, Ryo; Yoshinami, Tetsuhiro; Ishida, Masaki; Iwasaku, Masahiro; Kitano, Sae; Kato, Chikage; Sakaguchi, Koichi; Takayama, Koichi; Naoi, Yasuto
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Immunological characteristics of bronchoalveolar lavage fluid and blood across connective tissue disease-associated interstitial lung diseases
err2024-10-25
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errOAAI
errHirano, Aiko; Sakashita, Aki; Fujii, Wataru; Bassler, Kevin; Tsuji, Taisuke; Kadoya, Masatoshi; Omoto, Atsushi; Hiraoka, Noriya; Imabayashi, Tatsuya; Kaneko, Yoshiko; Sofue, Hideaki; Maehara, Yosuke; Seno, Takahiro; Wada, Makoto; Kohno, Masataka; Fukuda, Wataru; Yamada, Kei; Takayama, Koichi; Kawahito, Yutaka
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Impact of TTF-1 Expression on the Prognostic Prediction of Patients with Non-Small Cell Lung Cancer with PD-L1 Expression Levels of 1%to 49%, Treated with Chemotherapy vs. Chemoimmunotherapy: A Multicenter, Retrospective Study
err2024-10-25
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errOAAI
errNishioka, Naoya; Hata, Tae; Yamada, Tadaaki; Goto, Yasuhiro; Amano, Akihiko; Negi, Yoshiki; Watanabe, Satoshi; Furuya, Naoki; Oba, Tomohiro; Ikoma, Tatsuki; Nakao, Akira; Tanimura, Keiko; Taniguchi, Hirokazu; Yoshimura, Akihiro; Fukui, Tomoya; Murata, Daiki; Kaira, Kyoichi; Shiotsu, Shinsuke; Hibino, Makoto; Okada, Asuka; Chihara, Yusuke; Kawachi, Hayato; Kijima, Takashi; Takayama, Koichi
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Unraveling the influence of TTF-1 expression on immunotherapy outcomes in PD-L1-high non-squamous NSCLC: a retrospective multicenter study
err2024-07-15
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errOAAI
errNishioka, Naoya; Kawachi, Hayato; Yamada, Tadaaki; Tamiya, Motohiro; Negi, Yoshiki; Goto, Yasuhiro; Nakao, Akira; Shiotsu, Shinsuke; Tanimura, Keiko; Takeda, Takayuki; Okada, Asuka; Harada, Taishi; Date, Koji; Chihara, Yusuke; Hasegawa, Isao; Tamiya, Nobuyo; Masui, Taiki; Sai, Natsuki; Ishida, Masaki; Katayama, Yuki; Morimoto, Kenji; Iwasaku, Masahiro; Tokuda, Shinsaku; Kijima, Takashi; Takayama, Koichi
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Efficacy of Epidermal Growth Factor Receptor-Tyrosine Kinase Inhibitors in Metastatic Non-Small Cell Lung Cancer Patients with Poor Performance Status and Epidermal Growth Factor Receptor Mutations: Findings from the Japanese Cancer Database
err2024-06-01
err2
errOAAI
errOkuma, Yusuke; Shintani, Yasushi; Sekine, Ikuo; Shukuya, Takehito; Takayama, Koichi; Inoue, Akira; Okamoto, Isamu; Kiura, Katsuyuki; Yamamoto, Nobuyuki; Kawaguchi, Tomoya; Miyaoka, Etsuo; Yoshino, Ichiro; Date, Hiroshi
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Epithelial-mesenchymal transition status is a remarkable biomarker for the combination treatment with avutometinib and defactinib in KRAS-mutated non-small cell lung cancer
err2024-05-31
err3
PREAI
errYoshimura, Akihiro; Horinaka, Mano; Yaoi, Takeshi; Ono, Hisako; Itoh, Kyoko; Yamada, Tadaaki; Takayama, Koichi; Sakai, Toshiyuki
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Nirmatrelvir Resistance in an Immunocompromised Patient with Persistent Coronavirus Disease 2019
err2024-04-30
err2
errOAAI
errYamamoto, Chie; Taniguchi, Masashi; Furukawa, Keitaro; Inaba, Toru; Niiyama, Yui; Ide, Daisuke; Mizutani, Shinsuke; Kuroda, Junya; Tanino, Yoko; Nishioka, Keisuke; Watanabe, Yohei; Takayama, Koichi; Nakaya, Takaaki; Nukui, Yoko
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AXL signal mediates adaptive resistance to KRAS G12C inhibitors in KRAS G12C-mutant tumor cells
err2024-04-01
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errOAAI
errMorimoto, Kenji; Yamada, Tadaaki; Hirai, Soichi; Katayama, Yuki; Fukui, Sarina; Sawada, Ryo; Tachibana, Yusuke; Matsui, Yohei; Nakamura, Ryota; Ishida, Masaki; Kawachi, Hayato; Kunimasa, Kei; Sasaki, Takaaki; Nishida, Makoto; Furuya, Naoki; Watanabe, Satoshi; Shiotsu, Shinsuke; Nishioka, Naoya; Horinaka, Mano; Sakai, Toshiyuki; Uehara, Hisanori; Yano, Seiji; Son, Bo-Kyung; Tokuda, Shinsaku; Takayama, Koichi
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