Keiji Sugiyama

National Hospital Organization — Japan

Medicine · Health Sciences

14h-index703citations91works0.82yr avg
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Research Topics

Gastric Cancer Management and Outcomes(30), Colorectal Cancer Treatments and Studies(16), Cancer Treatment and Pharmacology(11), Lung Cancer Treatments and Mutations(9), Metastasis and carcinoma case studies(8)

Publications89 total

Survival benefit of nutritional support in advanced gastric cancer patients receiving chemotherapy: A propensity score–matched study.
Journal of Clinical Oncology·2026
Clinical outcomes in advanced gastric cancer among elderly patients (≥80 years old) treated with chemotherapy.
Journal of Clinical Oncology·2026
Improvement of survival in advanced gastric cancer over 15 years: Real-world analysis by 5-year periods.
Journal of Clinical Oncology·2026
Correction: Impact of perioperative fluorouracil, leucovorin, oxaliplatin, and docetaxel delivery on postoperative survival in locally advanced oesophagogastric adenocarcinoma
Gastric Cancer·2025Open Access
New Horizons with Growth Differentiation Factor 15 in Oncology: From Cancer Cachexia and Tumour Immunity to Novel Therapeutic Strategies
Current Oncology·2025· 1 citedOpen Access
The continued impact of COVID-19 during the Omicron era on immunocompromised individuals in Japan
Journal of Infection and Chemotherapy·2025Open Access
Impact of nutritional status on pathological response and recurrence-free survival in locally advanced oesophagogastric adenocarcinoma treated with perioperative FLOT therapy
ESMO Gastrointestinal Oncology·2025Open Access
Impact of perioperative fluorouracil, leucovorin, oxaliplatin, and docetaxel delivery on postoperative survival in locally advanced oesophagogastric adenocarcinoma
Gastric Cancer·2025· 1 citedOpen Access
A multicenter, prospective, observational study of nivolumab readministration for advanced gastric cancer (NIVO RETURNS)
Future Oncology·2025
Efficacy of Combined Dabrafenib and Trametinib Therapy in <i>BRAFV600E</i> Mutant Intrahepatic Cholangiocarcinoma with a Neurofibromatosis Type 2 Mutation
Internal Medicine·2025Open Access
A multicenter randomized open-label phase 2 study investigating optimal antiemetic therapy for patients with advanced/recurrent gastric cancer treated with trastuzumab deruxtecan: the EN-hance study
International Journal of Clinical Oncology·2025· 3 citedOpen Access
The efficacy and safety of FOLFOX therapy for advanced esophageal squamous cell carcinoma
Scientific Reports·2025· 2 citedOpen Access
The impact of nutritional status on recurrence-free survival (RFS) in patients with locally advanced oesophagogastric adenocarcinoma (LA-OGA) treated with FLOT therapy.
Journal of Clinical Oncology·2025
A retrospective observational study to evaluate the efficacy of trifluridine/tipiracil ± bevacizumab in metastatic colorectal cancer with MSI-high/deficient MMR.
Journal of Clinical Oncology·2025
Is treatment delivery of perioperative FLOT therapy in locally advanced OGA associated with recurrence-free survival?
Journal of Clinical Oncology·2025
Claudins as diagnostic tools and therapeutic targets—Glimpse of the horizon
Cancer Treatment Reviews·2025· 1 cited
Prevalence and clinicopathological features of microsatellite instability-high metastatic or recurrent gastric and esophagogastric junction cancer: WJOG13320GPS
Gastric Cancer·2024· 6 citedOpen Access
79P The role of regorafenib for metastatic colorectal cancer in the new era of later-line treatment: Results of the OSERO study
Annals of Oncology·2024
Clinical characteristics and COVID-19-related outcomes of immunocompromised patients receiving tixagevimab/cilgavimab pre-exposure prophylaxis in Japan
Journal of Infection and Chemotherapy·2024· 1 citedOpen Access
[A Case of Undifferentiated Sarcoma of the Liver in an Adult Treated with Right Hepatectomy Followed by Adjuvant Chemotherapy].
PubMed·2024
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Frequent Co-authors

Yukiya Narita(17), Kei Muro(17), Seiichiro Mitani(16), Toshiki Masuishi(15), Shigenori Kadowaki(15), Takashi Ura(14), Masashi Ando(12), Kazunori Honda(11), Kazuhiro Shiraishi(10), Chiyoe Kitagawa(9), Hiroya Taniguchi(8), Masahiro Tajika(6), Hiroya Taniguchi(5), Mariko Sato(5), Kentaro Yamazaki(5), Azusa Komori(4), Hideo Saka(4), M Matsutani(4), Riko Nishibori(4), Hisato Kawakami(4)