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4 "Ami Kawamoto"
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Original Articles
Comparative short-term efficacy of upadacitinib versus tofacitinib for ulcerative colitis: a 24-week real-world study in Japan
Akiko Tamura, Hiromichi Shimizu, Toshimitsu Fujii, Ami Kawamoto, Ryo Morikawa, Shuji Hibiya, Kento Takenaka, Masakazu Nagahori, Kazuo Ohtsuka, Ryuichi Okamoto
Received November 14, 2024  Accepted February 10, 2025  Published online March 20, 2025  
DOI: https://doi.org/10.5217/ir.2024.00187    [Epub ahead of print]
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Background/Aims
Tofacitinib and upadacitinib are small-molecule compounds that inhibit the Janus kinase pathway for the treatment of refractory ulcerative colitis. Only a few reports have compared the efficacy and safety of these 2 drugs in real-world practice. We aimed to show our real-world evidence of these drugs and compare the efficacy and safety profiles in the treatment of ulcerative colitis.
Methods
This study is a single-center retrospective analysis. Patients treated with tofacitinib or upadacitinib at our hospital between June 2018 and January 2024 who were monitored for 24 weeks were included. The primary outcome was steroid-free clinical remission at 24 weeks. Secondary outcomes were response and remission rates at each time point, time series changes in partial Mayo scores and laboratory results, treatment survival at 24 weeks, and the incidence of adverse events.
Results
A total of 68 patients treated with tofacitinib and 34 patients treated with upadacitinib were included. Steroid-free clinical remission rate at 24 weeks was significantly higher in upadacitinib-treated patients than in tofacitinibtreated patients (64.7% vs. 38.2%). The response rates in upadacitinib-treated patients exceeded 60% after 8 weeks of treatment through to 24 weeks, and the rates were higher than those in tofacitinib-treated patients. The incidences of adverse events were 79.4% in upadacitinib-treated patients and 38.2% in tofacitinib-treated patients. The most common adverse event was acne for upadacitinib.
Conclusions
Upadacitinib was more effective than tofacitinib in inducing remission in ulcerative colitis patients. The incidence of adverse events was significantly higher with upadacitinib than tofacitinib.
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IBD
Long-term efficacy and safety of tofacitinib in patients with ulcerative colitis: 3-year results from a real-world study
Hiromichi Shimizu, Yuko Aonuma, Shuji Hibiya, Ami Kawamoto, Kento Takenaka, Toshimitsu Fujii, Eiko Saito, Masakazu Nagahori, Kazuo Ohtsuka, Ryuichi Okamoto
Intest Res 2024;22(3):369-377.   Published online July 16, 2024
DOI: https://doi.org/10.5217/ir.2023.00194
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Background/Aims
The efficacy and safety of tofacitinib for the treatment of refractory ulcerative colitis (UC) has been demonstrated in clinical trials. Although, a series of reports with real-world evidence of its short-term efficacy and safety profiles have already been published, reports of long-term real-world data have been limited. We aimed to show our 3-year evidence on the clinical use of tofacitinib for the treatment of UC, focusing on its efficacy and safety profiles.
Methods
A retrospective observational study was conducted on patients who started tofacitinib for active refractory UC at our hospital. The primary outcome was the retention rate until 156 weeks after initiating tofacitinib. The secondary outcomes were short-term efficacy at 4, 8, and 12 weeks; long-term efficacy at 52, 104, and 156 weeks; prognostic factors related to the cumulative retention rate; loss of response; and safety profile, including adverse events.
Results
Forty-six patients who were able to be monitored for up to 156 weeks after tofacitinib initiation, were enrolled in this study. Continuation of tofacitinib was possible until 156 weeks in 54.3%, with > 50% response rates and > 40% remission rates. Among patients in whom response or remission was achieved and tofacitinib was deescalated after 8 weeks of induction treatment, 54.3% experienced relapse but were successfully rescued by and retained on reinduction treatment, except for 1 patient. No serious AEs were observed in the study.
Conclusions
Tofacitinib is effective and safe as long-term treatment in a refractory cohort of UC patients in real-world clinical practice.

Citations

Citations to this article as recorded by  
  • In which patients with ulcerative colitis would filgotinib be effective?
    Jihye Park
    Intestinal Research.2025; 23(1): 1.     CrossRef
  • Tofacitinib for ulcerative colitis in Brazil: a multicenter observational study on effectiveness and safety
    Rogério Serafim Parra, Renata de Sá Brito Fróes, Daniela Oliveira Magro, Sandro da Costa Ferreira, Munique Kurtz de Mello, Matheus Freitas Cardoso de Azevedo, Aderson Omar Mourão Cintra Damião, Alexandre de Sousa Carlos, Luísa Leite Barros, Maria Luiza Qu
    BMC Gastroenterology.2025;[Epub]     CrossRef
  • 2,787 View
  • 176 Download
  • 2 Web of Science
  • 2 Crossref
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IBD
Combination of leucine-rich alpha-2 glycoprotein and fecal markers detect Crohn’s disease activity confirmed by balloon-assisted enteroscopy
Ami Kawamoto, Kento Takenaka, Shuji Hibiya, Yoshio Kitazume, Hiromichi Shimizu, Toshimitsu Fujii, Eiko Saito, Kazuo Ohtsuka, Ryuichi Okamoto
Intest Res 2024;22(1):65-74.   Published online November 9, 2023
DOI: https://doi.org/10.5217/ir.2023.00092
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Background/Aims
Endoscopic activity confirmed by enteroscopy is associated with poor clinical outcome in Crohn’s disease (CD). We investigated which of the existing biomarkers best reflects endoscopic activity in CD patients including the small bowel, and whether their combined use can improve accuracy.
Methods
One hundred and four consecutive patients with ileal and ileocolonic type CD who underwent balloon-assisted enteroscopy (BAE) from October 2021 to August 2022 were enrolled, with clinical and laboratory data prospectively collected and analyzed.
Results
Hemoglobin, platelet count, C-reactive protein, leucine-rich alpha-2 glycoprotein (LRG), fecal calprotectin, and fecal hemoglobin all showed significant difference in those with ulcers found on BAE. LRG and fecal calprotectin showed the highest areas under the curve (0.841 and 0.853) for detecting ulcers. LRG showed a sensitivity of 78% and specificity of 80% at a cutoff value of 13 μg/mL, whereas fecal calprotectin showed a sensitivity of 91% and specificity of 67% at a cutoff value of 151 μg/g. Dual positivity for LRG and fecal calprotectin, as well as LRG and fecal hemoglobin, both predicted ulcers with an improved specificity of 92% and 100%. A positive LRG or fecal calprotectin/hemoglobin showed an improved sensitivity of 96% and 91%. Positivity for LRG and either of the fecal biomarkers was associated with increased risk of hospitalization, surgery, and relapse.
Conclusions
The biomarkers LRG, fecal calprotectin, and fecal hemoglobin can serve as noninvasive and accurate tools for assessing activity in CD patients confirmed by BAE, especially when used in combination.

Citations

Citations to this article as recorded by  
  • Leucine-rich alpha-2 glycoprotein in combination with C-reactive protein for predicting endoscopic activity in Crohn’s disease: a single-centre, cross-sectional study
    Yoshiaki Takada, Hiroki Kiyohara, Yohei Mikami, Masataka Taguri, Ryoya Sakakibara, Yasuhiro Aoki, Kosaku Nanki, Takaaki Kawaguchi, Yusuke Yoshimatsu, Shinya Sugimoto, Tomohisa Sujino, Kaoru Takabayashi, Naoki Hosoe, Haruhiko Ogata, Motohiko Kato, Yasushi
    Annals of Medicine.2025;[Epub]     CrossRef
  • Leucine-rich alpha-2 glycoprotein as a superior biomarker to C-reactive protein for detecting small bowel lesions in Crohn’s disease
    Masashi Ohno, Atsushi Nishida, Akinori Otsuki, Yoshihiro Yokota, Takayuki Imai, Shigeki Bamba, Osamu Inatomi
    World Journal of Gastrointestinal Endoscopy.2025;[Epub]     CrossRef
  • The usefulness of serum leucine-rich alpha-2 glycoprotein as a novel biomarker in monitoring inflammatory bowel disease: a systematic review and meta-analysis
    Fatemeh Ojaghi Shirmard, Seyed Morteza Pourfaraji, Behrad Saeedian, Tannaz Bagheri, Abdulrahman Ismaiel, Satohiro Matsumoto, Nastaran Babajani
    European Journal of Gastroenterology & Hepatology.2025;[Epub]     CrossRef
  • Diagnostic accuracy and cut-off values of serum leucine-rich alpha-2 glycoprotein for Crohn’s disease activity in the small bowel
    Muneyori Okita, Kento Takenaka, Fumihito Hirai, Shinya Ashizuka, Hideki Iijima, Shigeki Bamba, Toshimitsu Fujii, Kenji Watanabe, Yosuke Shimodaira, Hisashi Shiga, Sakiko Hiraoka, Toshihiro Inokuchi, Takeshi Yamamura, Ryo Emoto, Shigeyuki Matsui
    Journal of Gastroenterology.2025;[Epub]     CrossRef
  • Which biomarkers best reflect the degree of inflammation in Crohn’s disease?
    Jihye Park
    Intestinal Research.2024; 22(1): 1.     CrossRef
  • Efficacy of serum leucine-rich alpha-2 glycoprotein in predicting findings of Crohn’s disease small bowel lesion in capsule endoscopy
    Teppei Omori, Miki Koroku, Shun Murasugi, Ayumi Ito, Maria Yonezawa, Shinichi Nakamura, Katsutoshi Tokushige
    Intestinal Research.2024; 22(4): 464.     CrossRef
  • Selection of anti-cytokine biologics by pretreatment levels of serum leucine-rich alpha-2 glycoprotein in patients with inflammatory bowel disease
    Takahiro Amano, Takeo Yoshihara, Shinichiro Shinzaki, Yuko Sakakibara, Takuya Yamada, Naoto Osugi, Satoshi Hiyama, Yoko Murayama, Koji Nagaike, Hideharu Ogiyama, Toshio Yamaguchi, Yuki Arimoto, Ichizo Kobayashi, Shoichiro Kawai, Satoshi Egawa, Takashi Kiz
    Scientific Reports.2024;[Epub]     CrossRef
  • 4,232 View
  • 310 Download
  • 7 Web of Science
  • 7 Crossref
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Review
IBD
Artificial intelligence for endoscopy in inflammatory bowel disease
Kento Takenaka, Ami Kawamoto, Ryuichi Okamoto, Mamoru Watanabe, Kazuo Ohtsuka
Intest Res 2022;20(2):165-170.   Published online January 7, 2022
DOI: https://doi.org/10.5217/ir.2021.00079
AbstractAbstract PDFPubReaderePub
Inflammatory bowel disease (IBD), with its 2 subtypes, Crohn’s disease and ulcerative colitis, is a complex chronic condition. A precise definition of disease activity and appropriate drug management greatly improve the clinical course while minimizing the risk or cost. Artificial intelligence (AI) has been used in several medical diseases or situations. Herein, we provide an overview of AI for endoscopy in IBD. We discuss how AI can improve clinical practice and how some components have already begun to shape our knowledge. There may be a time when we can use AI in clinical practice. As AI systems contribute to the exact diagnosis and treatment of human disease, we should continue to learn best practices in health care in the field of IBD.

Citations

Citations to this article as recorded by  
  • Deep Learning Model Using Stool Pictures for Predicting Endoscopic Mucosal Inflammation in Patients With Ulcerative Colitis
    Jung Won Lee, Dongwon Woo, Kyeong Ok Kim, Eun Soo Kim, Sung Kook Kim, Hyun Seok Lee, Ben Kang, Yoo Jin Lee, Jeongseok Kim, Byung Ik Jang, Eun Young Kim, Hyeong Ho Jo, Yun Jin Chung, Hanjun Ryu, Soo-Kyung Park, Dong-Il Park, Hosang Yu, Sungmoon Jeong
    American Journal of Gastroenterology.2025; 120(1): 213.     CrossRef
  • Could histologic healing be a new treatment target in patients with ulcerative colitis?
    Soyoung Kim, Sang Hyoung Park
    The Korean Journal of Internal Medicine.2024; 39(1): 2.     CrossRef
  • From Data to Insights: How Is AI Revolutionizing Small-Bowel Endoscopy?
    Joana Mota, Maria João Almeida, Francisco Mendes, Miguel Martins, Tiago Ribeiro, João Afonso, Pedro Cardoso, Helder Cardoso, Patrícia Andrade, João Ferreira, Miguel Mascarenhas, Guilherme Macedo
    Diagnostics.2024; 14(3): 291.     CrossRef
  • The Role of Artificial Intelligence in the Diagnosis and Treatment of Ulcerative Colitis
    Petar Uchikov, Usman Khalid, Nikola Vankov, Maria Kraeva, Krasimir Kraev, Bozhidar Hristov, Milena Sandeva, Snezhanka Dragusheva, Dzhevdet Chakarov, Petko Petrov, Bistra Dobreva-Yatseva, Ivan Novakov
    Diagnostics.2024; 14(10): 1004.     CrossRef
  • Deep learning and minimally invasive inflammatory activity assessment: a proof-of-concept study for development and score correlation of a panendoscopy convolutional network
    Pedro Cardoso, Miguel Mascarenhas, João Afonso, Tiago Ribeiro, Francisco Mendes, Miguel Martins, Patrícia Andrade, Hélder Cardoso, Miguel Mascarenhas Saraiva, João P.S. Ferreira, Guilherme Macedo
    Therapeutic Advances in Gastroenterology.2024;[Epub]     CrossRef
  • Knowledge, attitudes, and practices of endoscopy among gastroenterologists in diagnosis and management of inflammatory bowel disease in China: a multicenter cross-sectional study
    Yinghao Sun, Gechong Ruan, Xiaoyin Bai, Wei Han, Minglan Yang, Lixin Jin, Yanni Huang, Xiaoxia Hou, Ke Shu, Yingying Liu, Yafeng Lu, Yan Zhao, Jie Zhong, Hong Yang
    BMC Gastroenterology.2024;[Epub]     CrossRef
  • Endoscopic findings of immune checkpoint inhibitor-related gastrointestinal adverse events
    Min Kyu Kim, Sung Wook Hwang
    Clinical Endoscopy.2024; 57(6): 725.     CrossRef
  • The pathobiology of follicular lymphoma
    Joaquim Carreras
    Journal of Clinical and Experimental Hematopathology.2023; 63(3): 152.     CrossRef
  • Artificial Intelligence in Digestive Endoscopy—Where Are We and Where Are We Going?
    Radu-Alexandru Vulpoi, Mihaela Luca, Adrian Ciobanu, Andrei Olteanu, Oana-Bogdana Barboi, Vasile Liviu Drug
    Diagnostics.2022; 12(4): 927.     CrossRef
  • Artificial intelligence within the small bowel: are we lagging behind?
    Stefania Chetcuti Zammit, Reena Sidhu
    Current Opinion in Gastroenterology.2022; 38(3): 307.     CrossRef
  • 5,703 View
  • 421 Download
  • 13 Web of Science
  • 10 Crossref
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