
OKUMURA Taiki
Academic Assembly School of Medicine and Health Sciences Institute of Medicine
Shinshu University Hospital Shinshu Cancer Center
Assistant Professor
Researcher Information
Research Keyword
- HLA, Hepatocellular Carcinoma
TEL
- 0263372634
Web site
Research activity information
Paper
- Prognostic Significance of Bile Duct Loss in Early‐Stage Primary Biliary Cholangitis: A Long‐Term Observational Study
Taiki Okumura; Takefumi Kimura; Takanobu Iwadare; Shun‐Ichi Wakabayashi; Hiroyuki Kobayashi; Yuki Yamashita; Satoru Joshita; Michiharu Komatsu; Naoki Tanaka; Akihiro Matsumoto; Tomoyuki Nakajima; Mai Iwaya; Masahiro Umemura; Kazuhito Kawata; Kenichi Harada; Takeji Umemura
Hepatology Research, Dec. 2025, Refereed
Lead

- Effect of Dotinurad on Uric Acid and Hepatorenal Parameters in Steatotic Liver Disease: A Pilot Study in Japanese Patients
Yuma Kamijo; Takanobu Iwadare; Takefumi Kimura; Kaede Fujita; Taiki Okumura; Shun-ichi Wakabayashi; Hiroyuki Kobayashi; Tomoo Yamazaki; Naoki Tanaka; Hideo Kunimoto
Biomedicines, Nov. 2025

- Spontaneous rupture of hepatocellular carcinoma in Fontan-associated liver disease with fatal outcome: case report and literature review
Taiki Okumura; Nana Yamakita; Ayumi Sugiura; Takanobu Iwadare; Hiroyuki Kobayashi; Shun-ichi Wakabayashi; Yuki Yamashita; Hirohiko Motoki; Takefumi Kimura
Clinical Journal of Gastroenterology, Aug. 2025
Lead, Corresponding

- AI-Based Platelet-Independent Noninvasive Test for Liver Fibrosis in MASLD Patients.
Shun-Ichi Wakabayashi; Takefumi Kimura; Nobuharu Tamaki; Takanobu Iwadare; Taiki Okumura; Hiroyuki Kobayashi; Yuki Yamashita; Naoki Tanaka; Masayuki Kurosaki; Takeji Umemura
JGH open : an open access journal of gastroenterology and hepatology, 9(4), e70150, Apr. 2025

- Hormone replacement therapy for steatotic liver management after surgical menopause.
Yoshiaki Kobayashi; Yuki Yamashita; Takefumi Kimura; Takanobu Iwadare; Taiki Okumura; Shun-Ichi Wakabayashi; Hiroyuki Kobayashi; Ayumi Sugiura; Satoru Joshita; Takeji Umemura
Clinical journal of gastroenterology, Jan. 2025

- Circulating thrombospondin 2 as a predictor of hepatocellular carcinoma in hepatitis B patients undergoing nucleos(t)ide analog therapy.
Taiki Okumura; Takefumi Kimura; Yuki Ichikawa; Takanobu Iwadare; Shun-Ichi Wakabayashi; Hiroyuki Kobayashi; Yuki Yamashita; Takuro Uchida; Sai P Pydi; Naoki Tanaka; Takeji Umemura
Scientific reports, 14(1), 25584-25584, Oct. 2024, Refereed
Lead

- Serum Autotaxin Levels Predict Liver-Related Events in Primary Biliary Cholangitis Patients: A Long-term Multicenter Observational Study: Autotaxin predict liver-related events in PBC.
Takanobu Iwadare; Takefumi Kimura; Yuki Yamashita; Taiki Okumura; Shun-Ichi Wakabayashi; Hiroyuki Kobayashi; Ayumi Sugiura; Tomoo Yamazaki; Satoshi Shimamoto; Koji Igarashi; Satoru Joshita; Takeji Umemura
Clinical and translational gastroenterology, Oct. 2024

- Thrombospondin 2 as a Predictive Biomarker for HCC in Hepatitis C Patients: A Longitudinal Study Following DAA Therapy.
Takanobu Iwadare; Takefumi Kimura; Ayumi Sugiura; Taiki Okumura; Shun-Ichi Wakabayashi; Hiroyuki Kobayashi; Yuki Yamashita; Tomoo Yamazaki; Satoru Joshita; Naoki Tanaka; Takeji Umemura
Journal of viral hepatitis, Oct. 2024

- Detection rates of hepatitis B surface and core-related antigens using novel highly sensitive assays in chronic hepatitis B patients with hepatitis B surface antigen seroclearance
Taiki Okumura; Satoru Joshita; Yoshiyuki Kitamura; Haruka Sagi; Takeji Umemura
Gastro Hep Advances, Jul. 2024, Refereed, Not invited
Lead

- Serum autotaxin is a prognostic indicator of liver-related events in patients with non-alcoholic fatty liver disease.
Takanobu Iwadare; Takefumi Kimura; Taiki Okumura; Shun-Ichi Wakabayashi; Taro Nakajima; Shohei Kondo; Hiroyuki Kobayashi; Yuki Yamashita; Ayumi Sugiura; Naoyuki Fujimori; Tomoo Yamazaki; Hideo Kunimoto; Satoshi Shimamoto; Koji Igarashi; Satoru Joshita; Naoki Tanaka; Takeji Umemura
Communications medicine, 4(1), 73-73, Apr. 2024

- Long-Term pemafibrate treatment exhibits limited impact on body fat mass in patients with hypertriglyceridemia accompanying NAFLD.
Takanobu Iwadare; Takefumi Kimura; Hideo Kunimoto; Taiki Okumura; Shun-Ichi Wakabayashi; Hiroyuki Kobayashi; Yuki Yamashita; Ayumi Sugiura; Naoki Tanaka; Takeji Umemura
Frontiers in endocrinology, 15, 1329294-1329294, 2024

- Prognostic Significance of C-Reactive Protein in Lenvatinib-Treated Unresectable Hepatocellular Carcinoma: A Multi-Institutional Study.
Taiki Okumura; Takefumi Kimura; Takanobu Iwadare; Shun-Ichi Wakabayashi; Hiroyuki Kobayashi; Yuki Yamashita; Ayumi Sugiura; Satoru Joshita; Naoyuki Fujimori; Hideo Kunimoto; Michiharu Komatsu; Hideki Fukushima; Hiromitsu Mori; Takeji Umemura
Cancers, 15(22), Nov. 2023, Refereed
Lead

- Kinetics of serum O-glycosylated M-hepatitis B surface antigen with hepatocellular carcinoma history and nucleos(t)ide analogue therapy in hepatitis B patients.
Taiki Okumura; Satoru Joshita; Takanobu Iwadare; Shun-Ichi Wakabayashi; Hiroyuki Kobayashi; Yuki Yamashita; Ayumi Sugiura; Takefumi Kimura; Takeji Umemura
Journal of viral hepatitis, 30(9), 731-739, Sep. 2023, Refereed
Lead

- HLA-G susceptibility to hepatitis B infection and related hepatocellular carcinoma in the Japanese population.
Taiki Okumura; Satoru Joshita; Tomoo Yamazaki; Takanobu Iwadare; Shun-Ichi Wakabayashi; Hiroyuki Kobayashi; Yuki Yamashita; Ayumi Sugiura; Takefumi Kimura; Masao Ota; Takeji Umemura
Human immunology, 84(8), 401-407, Aug. 2023, Refereed
Lead

- Symptom-based portopulmonary hypertension screening questionnaire in Japanese patients with chronic liver disease.
Shun-Ichi Wakabayashi; Satoru Joshita; Kazuhiro Kimura; Hirohiko Motoki; Taiki Okumura; Hiroyuki Kobayashi; Yuki Yamashita; Ayumi Sugiura; Tomoo Yamazaki; Takefumi Kimura; Koichiro Kuwahara; Takeji Umemura
JGH open : an open access journal of gastroenterology and hepatology, 7(8), 527-536, Aug. 2023

- Immune thrombocytopenic purpura in primary biliary cholangitis and localized cutaneous systemic sclerosis: case report and literature review.
Taiki Okumura; Takefumi Kimura; Yu Hihara; Katsuaki Inoue; Atsushi Maruyama; Satoru Joshita; Takeji Umemura
Clinical journal of gastroenterology, 16(3), 432-437, Jun. 2023, Refereed
Lead

- Splenic artery pseudoaneurysm resulting from gastric ulcer presenting acute upper gastrointestinal bleeding.
Taiki Okumura; Takefumi Kimura; Daichi Nakajima; Shohei Kondo; Satoko Kako; Yoshiyuki Takahashi; Kosuke Yamaka; Fumihito Ichinohe; Yoshinori Tsukahara; Tadanobu Nagaya; Takeji Umemura
Radiology case reports, 18(1), 97-99, Jan. 2023, Refereed
Lead

- Management of Rare Hemorrhage From Collateral Vessels During Gastrostomy Replacement Using Percutaneous Transhepatic Occlusion in Patient With Portal Hypertension
Taiki Okumura; Takefumi Kimura; Tomoo Yamazaki; Takayuki Miyazawa; Yoshinori Tsukahara; Masahiro Kurozumi; Yugo Iwaya; Tadanobu Nagaya; Takeji Umemura
Gastro Hep Advances, 2(5), 652-655, 2023, Refereed, Not invited
Lead

- Clinical Analysis of Extrapulmonary Neuroendocrine Carcinoma: A Retrospective and Single Institution Experience.
Taiki Okumura; Takuro Noguchi; Nodoka Sekiguchi; Takashi Kobayashi; Shintaro Kanda; Kouichi Ida; Tomonori Minagawa; Shigeo Tokumaru; Takeji Umemura; Tomonobu Koizumi
Chemotherapy, 68(2), 87-94, 2023, Refereed
Lead

- Circulating thrombospondin 2 levels reflect fibrosis severity and disease activity in HCV-infected patients.
Takanobu Iwadare; Takefumi Kimura; Naoki Tanaka; Tomoo Yamazaki; Shun-Ichi Wakabayashi; Taiki Okumura; Hiroyuki Kobayashi; Yuki Yamashita; Sai P Pydi; Tomoyuki Nakajima; Mai Iwaya; Ayumi Sugiura; Satoru Joshita; Takeshi Uehara; Takeji Umemura
Scientific reports, 12(1), 18900-18900, Nov. 2022

- Higher Responsiveness for Women, High Transaminase Levels, and Fat Percentage to Pemafibrate Treatment for NAFLD.
Takanobu Iwadare; Takefumi Kimura; Hideo Kunimoto; Naoki Tanaka; Shun-Ichi Wakabayashi; Tomoo Yamazaki; Taiki Okumura; Hiroyuki Kobayashi; Yuki Yamashita; Ayumi Sugiura; Satoru Joshita; Takeji Umemura
Biomedicines, 10(11), Nov. 2022

- Quantitative changes of lipoprotein(a) in chronic hepatitis C patients achieving a sustained virological response by direct-acting antivirals.
Taiki Okumura; Satoru Joshita; Ayumi Sugiura; Masao Ota; Takeji Umemura
Clinics and research in hepatology and gastroenterology, 46(8), 102011-102011, Oct. 2022, Refereed
Lead

- 2-Step PLT16-AST44 method: Simplified liver fibrosis detection system in patients with non-alcoholic fatty liver disease.
Naoyuki Fujimori; Takefumi Kimura; Naoki Tanaka; Tomoo Yamazaki; Taiki Okumura; Hiroyuki Kobayashi; Shun-Ichi Wakabayashi; Yuki Yamashita; Ayumi Sugiura; Jonathan Pham; Sai P Pydi; Kenji Sano; Satoru Joshita; Takeji Umemura
Hepatology research : the official journal of the Japan Society of Hepatology, 52(4), 352-363, Apr. 2022

- Disseminated Carcinomatosis of Bone Marrow as the Initial Presentation of Intrahepatic Cholangiocarcinoma without Jaundice: An Autopsy Case Report.
Taiki Okumura; Kenta Mitsui; Seiichi Daikuhara; Toshiharu Tatai; Hiroko Itagaki; Hideharu Miyabayashi; Yukio Gibo
Internal medicine (Tokyo, Japan), 61(5), 657-662, Mar. 2022, Refereed
Lead

- aMAP score prediction of hepatocellular carcinoma occurrence and incidence-free rate after a sustained virologic response in chronic hepatitis C.
Yuki Yamashita; Satoru Joshita; Ayumi Sugiura; Tomoo Yamazaki; Hiroyuki Kobayashi; Shun-Ichi Wakabayashi; Yosuke Yamada; Soichiro Shibata; Hideo Kunimoto; Takanobu Iwadare; Makiko Matsumura; Chiharu Miyabayashi; Taiki Okumura; Sachie Ozawa; Yuichi Nozawa; Natsuko Kobayashi; Michiharu Komatsu; Naoyuki Fujimori; Hiromi Saito; Takeji Umemura
Hepatology research : the official journal of the Japan Society of Hepatology, 51(9), 933-942, Sep. 2021

- [Case of Asymptomatic Multiple Bone and Bone Marrow Metastases in Gastric Signet-Ring Cell Carcinoma].
Taiki Okumura; Yu Hihara; Shinji Muraoka; Yoshihiro Nishimura; Katsuaki Inoue; Atsushi Maruyama; Toshitsugu Nakamura; Masayuki Fujiwara
Gan to kagaku ryoho. Cancer & chemotherapy, 47(7), 1105-1107, Jul. 2020, Refereed
Lead
- Thrombotic Thrombocytopenic Purpura Treated with Rituximab Associated with Primary Sjögren's Syndrome and Primary Hypothyroidism.
Taiki Okumura; Koji Hashimoto; Daiki Aomura; Yukihumi Kurasawa; Yuuta Hara; Kazuaki Fujii; Tomoe Masuda; Kosuke Sonoda; Akinori Yamaguchi; Yohei Ogawa; Yuji Kamijo
Internal medicine (Tokyo, Japan), 59(5), 715-719, Mar. 2020, Refereed
Lead

- ACTH-producing thymic neuroendocrine tumor initially presenting as psychosis: A case report and literature review.
Taiki Okumura; Shohei Takayama; Shin-Ichi Nishio; Takahiro Miyakoshi; Takuro Noguchi; Takashi Kobayashi; Toshirou Fukushima; Nodoka Sekiguchi; Toshiaki Otsuki; Mitsuhisa Komatsu; Tomonobu Koizumi
Thoracic cancer, 10(7), 1648-1653, Jul. 2019, Refereed
Lead
