岡本武士 (Takeshi Okamoto) - マイポータル

基本情報

研究者番号: 50897155
ORCID iD: https://orcid.org/0000-0001-9719-0282
J-GLOBAL ID: 202101010084851247
researchmap会員ID: R000016910

研究キーワード

研究分野

ライフサイエンス / 消化器内科学 / 肝細胞癌

経歴

2021年4月 - 現在

公益財団法人がん研究会有明病院, 肝胆膵内科, 副医長
2019年4月 - 2021年3月

聖路加国際病院, 消化器内科, 医員
2017年4月 - 2019年3月

聖路加国際病院, 消化器内科, フェロー
2013年4月 - 2017年3月

聖路加国際病院, 内科, 後期研修医
2011年4月 - 2013年3月

聖路加国際病院, 研修医

学歴

2021年1月 - 2022年9月

東海大学, 医学研究科, 消化器内科学
2006年4月 - 2011年3月

東海大学, 医学部, 医学科

論文

137

Comparison of Two Partially Covered Metal Stents for Endoscopic Ultrasound‐guided Hepaticogastrostomy: A Multi‐Center Retrospective Study

Masahiro Yamamura, Hirotoshi Ishiwatari, Saburo Matsubara, Takeshi Okamoto, Michihiro Ono, Toshinori Okuda, Etsuji Ishida, Kohichi Takada, Kazuma Ishikawa, Naoki Sasahira …

DEN Open 2027年4月
Relative Dose Intensity and Outcomes in Elderly Patients With Resectable Pancreatic Cancer Receiving Neoadjuvant Chemotherapy

Tsuyoshi Takeda, Masato Ozaka, Takashi Sasaki, Yosuke Inoue, Tatsuki Hirai, Takafumi Mie, Takaaki Furukawa, Takeshi Okamoto, Yu Takahashi, Naoki Sasahira

JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 33(6) 472-479 2026年6月
Patient-derived orthotopic xenograft models recapitulate the peritoneal dissemination of pancreatic cancer and delineate its transcriptomic, regulatory, and spatial programs.

Takaaki Furukawa, Kohei Kumegawa, manabu Takamatsu, Kenichi Miyata, Sumito Saeki, Chikako Shibata, Takafumi Mie, Takeshi Okamoto, Tsuyoshi Takeda, Takashi Sasaki …

CANCER RESEARCH 86(7) 2125-2125 2026年4月3日
Endoscopic Retrograde Cholangiopancreatography-guided Biliary Drainage with Duckbill-type Anti-reflux Metal Stent versus Endoscopic Ultrasound-guided Hepaticogastrostomy for Malignant Distal Biliary Obstruction in Pancreatic Cancer with Duodenal Invasion

Tsuyoshi Takeda, Takashi Sasaki, Tatsuki Hirai, Yoichiro Sato, Yuri Maegawa, Takafumi Mie, Takaaki Furukawa, Yukari Suzuki, Takeshi Okamoto, Masato Ozaka …

DEN OPEN 6(1) 2026年4月
Changing treatment outcomes in metastatic and recurrent pancreatic cancer: a real-world comparison before and after the availability of nanoliposomal irinotecan

Takafumi Mie, Masato Ozaka, Takeshi Okamoto, Keito Suzuki, Yoichiro Sato, Tatsuki Hirai, Yuri Maegawa, Jun Hamada, Takaaki Furukawa, Yukari Suzuki …

JAPANESE JOURNAL OF CLINICAL ONCOLOGY 56(3) 299-308 2026年3月
Patient-derived orthotopic xenograft models recapitulate the peritoneal dissemination of pancreatic cancer and delineate its transcriptional and regulatory programs

Takaaki Furukawa, Kohei Kumegawa, Kenichi Miyata, Manabu Takamatsu, Asumi Iesato, Sumito Saeki, Liying Yang, Chikako Shibata, Tomoko Takahara, Kaoru Masuda …

JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH 45(1) 2026年2月11日
Gastrointestinal Bleeding after Particle Radiotherapy for Pancreatic Cancer

Takeshi Okamoto, Takafumi Mie, Tsuyoshi Takeda, Keito Suzuki, Yoichiro Sato, Tatsuki Hirai, Yuri Maegawa, Jun Hamada, Takaaki Furukawa, Takashi Sasaki …

DIGESTION 2026年1月16日
Multi-omics analysis of organoids and xenograft models for exploring epigenetic abnormalities in pancreatic cancer

Takaaki Furukawa, Kenichi Miyata, Chikako Shibata, Kohei Kumegawa, Miwa Tanaka, Takafumi Mie, Takeshi Okamoto, Tsuyoshi Takeda, Takashi Sasaki, Masato Ozaka …

CANCER SCIENCE 117 21-21 2026年1月
Progressive Sarcopenia as a Prognostic Marker in the Era of Immunotherapy

Takeshi Okamoto, Takashi Sasaki, Masato Ozaka, Naoki Sasahira

HEPATOLOGY RESEARCH 55(9) 1217-1219 2025年9月
Adverse Events of Single Balloon Enteroscopy-assisted Endoscopic Retrograde Cholangiopancreatography in the Elderly: A Propensity Score Matching Analysis

Hiroki Nakagawa, Tsuyoshi Takeda, Takeshi Okamoto, Takafumi Mie, Takaaki Furukawa, Takashi Sasaki, Masato Ozaka, Takahisa Matsuda, Yoshinori Igarashi, Naoki Sasahira

DEN OPEN 6(1) 2025年8月26日
Impact of second-line combination chemotherapy on post-progression survival in metastatic and recurrent pancreatic cancer

Takafumi Mie, Masato Ozaka, Takeshi Okamoto, Tsuyoshi Takeda, Yoichiro Sato, Tatsuki Hirai, Takahiro Ishitsuka, Yuri Maegawa, Takaaki Furukawa, Yukari Suzuki …

INTERNATIONAL JOURNAL OF CLINICAL ONCOLOGY 30(8) 1610-1620 2025年8月
Bone loss, osteoporosis, and fractures in patients with resected pancreatic head cancer

Tsuyoshi Takeda, Takashi Sasaki, Yosuke Inoue, Takeshi Okamoto, Tatsuki Hirai, Takafumi Mie, Takaaki Furukawa, Yukari Suzuki, Masato Ozaka, Yu Takahashi …

PANCREATOLOGY 25(5) 685-693 2025年8月
Clinical predictors of KRAS mutation detection in liquid biopsies for pancreatic ductal adenocarcinoma

Takaaki Furukawa, Ippei Fukada, Naomi Hayashi, Takeshi Okamoto, Yoichiro Sato, Yuri Maegawa, Tatsuki Hirai, Takafumi Mie, Tsuyoshi Takeda, Takashi Sasaki …

PANCREATOLOGY 25(5) 736-742 2025年8月
Pathological complete response following addition of durvalumab to gemcitabine and cisplatin therapy for intrahepatic cholangiocarcinoma with Lynch syndrome-associated mismatch repair deficiency

Koshiro Fukuda, Akiyoshi Kasuga, Yasuyuki Shigematsu, Kenichiro Kato, Hiromichi Ito, Arisa Ueki, Takeshi Okamoto, Masato Ozaka, Yu Takahashi, Naoki Sasahira

CLINICAL JOURNAL OF GASTROENTEROLOGY 18(3) 520-526 2025年6月
TREATMENT SEQUENCE OF UNRESECTABLE HEPATOCELLULAR-CHOLANGIOCARCINOMA

Takeshi Okamoto, Takafumi Mie, Takaaki Furukawa, Tsuyoshi Takeda, Takashi Sasaki, Masato Ozaka, Naoki Sasahira

GASTROENTEROLOGY 169(1) 2025年5月3日
Exploring predictive factors for detecting KRAS mutations in pancreatic cancer using liquid biopsy.

Takaaki Furukawa, Ippei Fukada, Naomi Hayashi, Manabu Takamatsu, Yoichiro Sato, Yuri Maegawa, Tatsuki Hirai, Takafumi Mie, Takeshi Okamoto, Tsuyoshi Takeda …

JOURNAL OF CLINICAL ONCOLOGY 43(4_SUPPL) 782-782 2025年2月
Efficacy of Anamorelin in Advanced Pancreatic Cancer Patients with a Poor Performance Status

Tsuyoshi Takeda, Takashi Sasaki, Takeshi Okamoto, Koshiro Fukuda, Tatsuki Hirai, Manabu Yamada, Hiroki Nakagawa, Takafumi Mie, Takaaki Furukawa, Akiyoshi Kasuga …

INTERNAL MEDICINE 64(3) 351-358 2025年
Liver Oligometastasis in Biliary Tract Cancer and Impact on Survival Outcomes

Takeshi Okamoto, Tsuyoshi Takeda, Takashi Sasaki, Yosuke Inoue, Takafumi Mie, Tatsuki Hirai, Takahiro Ishitsuka, Manabu Yamada, Hiroki Nakagawa, Takaaki Furukawa …

JOURNAL OF GASTROINTESTINAL CANCER 55(4) 1530-1540 2024年12月
One-step endoscopic ultrasound-guided pancreatic duct drainage using a 7-Fr ultra-tapered plastic stent and a novel 0.035-inch guidewire

Takashi Sasaki, Yoichiro Sato, Yuri Maegawa, Takeshi Okamoto, Naoki Sasahira

ENDOSCOPY 56 E1098-E1099 2024年12月
Outcomes of multi-hole self-expandable metal stents versus fully covered self-expandable metal stents for malignant distal biliary obstruction in unresectable pancreatic cancer

Tsuyoshi Takeda, Takashi Sasaki, Takeshi Okamoto, Takafumi Mie, Yoichiro Sato, Yuri Maegawa, Tatsuki Hirai, Yukari Suzuki, Takaaki Furukawa, Masato Ozaka …

DEN OPEN 5(1) 2024年9月24日

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