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Original Articles
Burden of inflammatory bowel disease in India: analysis of the Global Burden of Disease study from 1990 to 2019
Suprabhat Giri, Anuraag Jena, Praveen Kumar-M, Jaikumar Rajavoor Muniswamy, Preetam Nath, Vishal Sharma
Received August 26, 2024  Accepted December 4, 2024  Published online February 6, 2025  
DOI: https://doi.org/10.5217/ir.2024.00134    [Epub ahead of print]
AbstractAbstract PDF
Background/Aims
Inflammatory bowel disease (IBD) is increasing across the globe, more so in populous countries like India. We aimed to study the disease burden and epidemiological trends of IBD in India and look closer into the disease pattern across the country from 1990 to 2019.
Methods
The burden of IBD was estimated in India using the data from the Global Burden of Disease estimate for 2019, which is a comprehensive worldwide project. The analysis included various parameters like incidence, prevalence, mortality, disability-adjusted life years, years lived with disability, and years of life lost as age-adjusted rates (per 100,000 population). Using modeling, the prediction was also made for 2050 in India.
Results
The age-standardized incidence, prevalence, mortality, and disability rates of IBD in India for 2019 were 2.34, 20.34, 0.40, and 13.04, respectively. These are lower than the global incidence, prevalence, mortality, and disability rates of 4.97, 59.25, 0.54, and 20.15, respectively. The annual rates of change in incidence, prevalence, mortality, and disability rates in India from 1990 to 2019 were 0.05, –0.02, –0.36, and –0.35, respectively. The annual rates of change in incidence and prevalence are higher than the global rate of –0.18 and –0.19, while the annual rates of change in mortality and disability are lower than the global rate of –0.19 and –0.26.
Conclusions
The incidence and prevalence of IBD in India are lower compared to the global population but are increasing at a faster rate than the global population.
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Propensity score-matched real-world comparative treatment outcomes of Janus kinase inhibitors for ulcerative colitis in patients with and without prior exposure to anti-tumor necrosis factor α antibody
Maiko Ikenouchi, Hirokazu Fukui, Soichi Yagi, Akira Nogami, Koji Kaku, Toshiyuki Sato, Mikio Kawai, Koji Kamikozuru, Yoko Yokoyama, Tetsuya Takagawa, Toshihiko Tomita, Taku Kobayashi, Shinichiro Shinzaki
Received September 22, 2024  Accepted November 20, 2024  Published online February 3, 2025  
DOI: https://doi.org/10.5217/ir.2024.00148    [Epub ahead of print]
AbstractAbstract PDF
Background/Aims
Tofacitinib (TFB), filgotinib (FIL), and upadacitinib (UPA) are Janus kinase (JAK) inhibitors approved for moderate-to-severe ulcerative colitis (UC). The appropriate positioning of each JAK inhibitor in the treatment algorithm, however, is unclear. Furthermore, real-world efficacy of JAK inhibitors for patients with UC and prior anti-tumor necrosis factor α antibody (aTNF) treatment are not fully investigated. We compared the efficacy and safety of 3 JAK inhibitors in patients with UC, considering their prior aTNF exposure.
Methods
A retrospective study was conducted in patients with UC who started TFB, FIL, or UPA at 2 academic centers. This propensity score-matched cohort study assessed the effectiveness of the 3 JAK inhibitors for UC in patients with and without prior aTNF exposure, comparing steroid-free clinical remission and response rates after 8 weeks.
Results
Among 274 patients who met the inclusion criteria, 145 experienced aTNF exposure (TFB: 59.2%, 100/169; FIL: 34.5%, 20/58; UPA: 53.2%, 25/47). Based on propensity score-matching, UPA led to a higher steroid-free clinical remission rates than TFB (adjusted odds ratio [aOR], 5.57; 95% confidence interval [CI], 1.42–21.90) or FIL (aOR, 9.00; 95% CI, 1.42–57.10) in patients exposed to aTNF. Steroid-free clinical remission and clinical response rates did not differ significantly between each group in patients non-exposed to aTNF. The incidence of adverse events was slightly higher with UPA than TFB or FIL.
Conclusions
UPA may be more effective for UC than TFB or FIL, especially in patients with previous aTNF exposure, although consideration should be given to adverse events.
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Short-term and long-term outcomes of acute severe ulcerative colitis in Taiwan: a multicenter study with pre- and post-biologics comparison
Wei-Chen Lin, Chun-Chi Lin, Wen-Hung Hsu, Feng-Fan Chiang, Chen-Wang Chang, Tzu-Chi Hsu, Deng-Chyang Wu, Horng-Yuan Wang, Jau-Min Wong, Shu-Chen Wei
Received July 7, 2024  Accepted October 14, 2024  Published online January 24, 2025  
DOI: https://doi.org/10.5217/ir.2024.00112    [Epub ahead of print]
AbstractAbstract PDFPubReaderePub
Background/Aims
Data from Asia regarding the short-term and long-term outcomes for acute severe ulcerative colitis (ASUC) are limited. We assessed the outcomes of ASUC, identified the risk factors for colectomy, and compared colectomy rates between the pre-biologics and post-biologics eras in Taiwan.
Methods
The patients with an ASUC diagnosis between January 2013 and March 2022 at 5 tertiary medical centers were retrospectively analyzed.
Results
In total, 98 patients were enrolled, with 68.4% diagnosed in the post-biologics era. In 78.6% of the ASUC patients initially received intravenous steroid therapy, for which the success rate was 74.1%. As for rescue therapy, 15 patients (93.8%) received biologics and 1 (6.3%) received cyclosporin. Biologics rescue therapy had a 93.3% success rate. One (1%) mortality due to septic shock occurred. The colectomy rate for index ASUC admission was 11.2%. Patients receiving colectomy were predominantly male (P= 0.012) and at older age (P= 0.016). Higher C-reactive protein (P= 0.035), lower albumin (P= 0.017), and hemoglobin (P= 0.023) levels were associated with colectomy risk. During a median follow-up of 24 months, 13 patients (15.1%) had recurrent ASUC and 23.1% of patients received colectomy. The accumulated colectomy rate at 3 years did not differ between the pre- and post-biologics eras (16.1% vs. 13.4%, P= 0.270).
Conclusions
This is the first Asian study on ASUC to compare colectomy rates between the prebiologics and post-biologics eras, revealing no significant difference. The recurrent ASUC had a higher colectomy rate than the index ASUC.
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Prevalence and outcome of sarcopenia in patients with inflammatory bowel disease: a follow-up study
Vikram Dharap, Devendra Desai, Philip Abraham, Tarun Gupta, Pavan Dhoble, Nirad Mehta, Jagdish Modhe
Received June 24, 2024  Accepted October 19, 2024  Published online January 23, 2025  
DOI: https://doi.org/10.5217/ir.2024.00096    [Epub ahead of print]
AbstractAbstract PDFPubReaderePub
Background/Aims
Sarcopenia is implicated in inflammatory bowel disease (IBD) complications and surgical outcomes. This study aimed to investigate the prevalence and follow-up of sarcopenia in patients with IBD.
Methods
Consecutive consenting patients with IBD aged > 18 years were included. Patients with associated sarcopenic diseases were excluded. All had measurements of anthropometry, body mass index (BMI), mid-arm muscle circumference, muscle strength, physical performance, and muscle mass (on computed tomography scan). They were followed up for up to 12 months, and incidence of flares, fractures, and surgery was noted.
Results
Of 157 patients screened, 35 refused participation; 5 with associated sarcopenic diseases were excluded. Of 117 patients (median age, 41 years; interquartile range, 18–81 years; 65 men), 73 had ulcerative colitis, 42 Crohn’s disease, and 2 IBD-unclassified. Forty (34.2%) had probable sarcopenia; 47 (40.2%) had sarcopenia (29 ulcerative colitis and 18 Crohn’s disease) including 10 (8.5%) with severe sarcopenia. Ten (21.3%) were in disease remission. Of factors associated with sarcopenia in univariate analysis, only BMI was significant in multivariate analysis. Ninety-nine patients followed up for a median of 7 months (interquartile range, 2–12 months). Freedom from flares was 5.3% in patients with sarcopenia and 46.1% in those without (P= 0.004). Three patients (1 with sarcopenia, 2 without) required surgery.
Conclusions
Sarcopenia was present in 40% of patients with IBD; one-fifth of these had severe sarcopenia. One-fifth were in remission. Low BMI correlated with sarcopenia. More patients with sarcopenia had disease flare. Screening for sarcopenia should be considered in patients with IBD.
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Understanding fatigue among Japanese patients with inflammatory bowel disease: insights from international comparisons and meta-analysis
Makoto Tanaka, Momoko Takai, Sayaka Wakai, Kayoko Sakagami, Hiroaki Ito
Received September 13, 2024  Accepted November 17, 2024  Published online January 22, 2025  
DOI: https://doi.org/10.5217/ir.2024.00145    [Epub ahead of print]
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Background/Aims
Fatigue is a common symptom in patients with inflammatory bowel disease (IBD). The Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-F) scale has demonstrated reliability and validity in assessing fatigue in patients with IBD and is used worldwide. This study aimed to examine the current state of fatigue among Japanese patients with IBD using the FACIT-F scale and to compare these findings with data from global studies through a systematic review.
Methods
Data from 488 patients with IBD treated at a specialized IBD clinic were analyzed. Patient characteristics, such as sex, age, disease duration, disease activity, FACIT-F scores, and sleep duration, were collected. A literature search identified 8 studies that met our inclusion criteria for an international comparison. A meta-analysis was performed on the Fatigue Subscale (FS) scores of FACIT-F to estimate the pooled mean.
Results
The mean FACIT-F (FS) score in this study was 39.9 ± 8.6. Four variables were significantly associated with fatigue: low Emotional Well-Being subscale scores, sleep duration < 6 hours, albumin level below the reference value, and being unmarried. The meta-analysis revealed that the pooled mean score was 40.2 (95% confidence interval, 39.5–40.9), and between-study heterogeneity was moderate (I2 = 41%).
Conclusions
The FACIT-F (FS) scores and related factors in Japanese patients with IBD demonstrated a similar trend to those in other countries. These findings can be used to identify patients in need of support and to consider interventions for modifiable factors. This study will help promote international collaborative research.
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Statement
Role of 5-aminosalicylic acid in ulcerative colitis management in 8 Asian territories: a physician survey
Julajak Limsrivilai, Allen Yu-hung Lai, Silvia T. H. Li, Murdani Abdullah, Raja Affendi Raja Ali, Satimai Aniwan, Hoang Huu Bui, Jen-Wei Chou, Ida Normiha Hilmi, Wee Chian Lim, Jose Sollano, Michelle Mui Hian Teo, Shu-Chen Wei, Wai Keung Leung
Received June 8, 2024  Accepted October 15, 2024  Published online January 6, 2025  
DOI: https://doi.org/10.5217/ir.2024.00085    [Epub ahead of print]
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Clinical guidelines typically endorse conventional therapies such as 5-aminosalicylic acid (5-ASA) as the mainstay of ulcerative colitis management. However, the degree of adoption and application of guideline recommendations by physicians within Asia remains unclear. This study aims to understand the prescribing patterns of 5-ASA and implementation of current guideline recommendations across Asian clinical practice. A physician survey was conducted among inflammatory bowel disease specialists in 8 Asian territories to understand practices and preferences in ulcerative colitis management, focusing on the use of 5-ASA and concordance with guideline recommendations. Survey findings were validated by country experts in diverse healthcare settings. Subgroup analyses stratified data by income levels and treatment reimbursement status. Ninety-eight valid responses were received from inflammatory bowel disease specialists or gastroenterologists among 8 economic entities. Significant differences were found in clinical practices and treatment preferences for ulcerative colitis management among different income-level and government-subsidy groups. Survey results are summarized in 8 findings that illustrate trends in 5-ASA use and guideline implementation across Asian territories. This study emphasizes socioeconomic factors that impact the adoption of guideline recommendations in real-world practice. Our findings indicate an eclectic approach to guideline implementation across Asia, based on resource availability and feasibility of treatment goals.
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Original Articles
Persistence of advanced therapies in patients with inflammatory bowel disease: retrospective cohort study using a large healthcare claims database in Japan
Katsuyoshi Matsuoka, Ko Nakajo, Shiho Kawamura, Yongjing Zhang, Hsingwen Chung, Bryan Wahking, Jin Yu Tan, Hong Qiu
Received July 22, 2024  Accepted October 8, 2024  Published online January 2, 2025  
DOI: https://doi.org/10.5217/ir.2024.00118    [Epub ahead of print]
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Background/Aims
There are few studies that comprehensively report real-world persistence for first-line advanced therapies used to treat inflammatory bowel disease. We aimed to describe persistence of first-line advanced therapies among incident biologic or Janus kinase inhibitor users with inflammatory bowel disease.
Methods
Retrospective cohort study using the Japan Medical Data Center database from January 1, 2010, until September 30, 2022. Patients aged ≥15 years with relevant diagnostic and treatment codes were included. All eligible patients were observed until study end (September 30, 2022), death, or disenrollment, whichever occurred first.
Results
Among 1,115 patients with Crohn’s disease included in the analysis, 41.4% initiated adalimumab, 37.4% infliximab, 18.1% ustekinumab, and 3.0% vedolizumab. Median age was 31.2–34.8 years, 72.8% to 85.9% were male. Persistence at 12 months was 84.7% for adalimumab, 87.7% for infliximab, 91.3% for ustekinumab, and 53.1% for vedolizumab. Persistence at 24 months was 76.3%, 76.8%, 80.4%, and 28.6%, respectively. Among 1,942 patients with ulcerative colitis, 24.8% initiated adalimumab, 33.6% infliximab, 11.2% golimumab, 17.5% vedolizumab, 5.6% ustekinumab, and 7.3% tofacitinib. Mean age was 38.2–40.4 years, 57.4% to 65.8% were male. Persistence at 12 months was 57.6% for adalimumab, 87.7% for infliximab, 54.9% for golimumab, 69.7% for vedolizumab, and 84.0% for ustekinumab. At month 24, persistence for ustekinumab was 75.0%, versus 42.9%–59.4% for other treatments.
Conclusions
Index treatment with ustekinumab resulted in high persistence through 24 months after initiation in patients with Crohn’s disease or ulcerative colitis. Our study provides insights into the real-world usage of advanced treatments for patients with IBD in Japan.
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Health-related quality of life, work productivity, and persisting challenges in treated ulcerative colitis patients: a Japanese National Health and Wellness Survey
Sakiko Hiraoka, Zhezhou Huang, Fei Qin, Fatima Megala Nathan Arokianathan, Kiran Davé, Shweta Shah, Hyunchung Kim
Received July 2, 2024  Accepted October 23, 2024  Published online January 2, 2025  
DOI: https://doi.org/10.5217/ir.2024.00104    [Epub ahead of print]
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Background/Aims
Despite available treatments for ulcerative colitis (UC), unmet needs persist among patients in Japan. This study explored the health-related quality of life (HRQoL), work productivity and activity impairment (WPAI), indirect cost, and unmet needs among treated UC patients in Japan.
Methods
This cross-sectional, observational study utilized data from the online 2017, 2019, and 2021 Japan National Health and Wellness Survey. Respondents were aged ≥ 18 years and had undergone or were on UC treatment (5-aminosalicylic acid, steroids, immunomodulators/immunosuppressants, biologics/Janus kinase inhibitors [JAKi]). Demographic, general health, and clinical characteristics, medication adherence, HRQoL, WPAI, and indirect cost were collected and analyzed.
Results
Among 293 treated UC patients, 83.6% were non-biologic/JAKi users, 29.0% had UC ≥ 15 years, 34.8% had moderate-to-severe disease severity, 55.3% experienced ≥ 1 persisting UC symptom, and 91.5% reported UC as bothersome to an extent. Patients reported EuroQoL visual analog scale score of 68.1 and ≥ 35% reported anxiety and depression. Mean work productivity loss was 29.3%, resulting in an annual mean indirect loss of 1.1 million JPY (45.3 thousand USD) per person. Higher WPAI (impairment) was associated with being male, moderate-to-severe disease severity, and low treatment adherence (P< 0.05). Biologics/JAKi users had higher work impairment, and IM/IS users had higher activity impairment than 5-aminosalicylic acid users (P< 0.05).
Conclusions
Despite treatment, Japanese UC patients experienced high disease burden and persistent disease-related challenges. Overall HRQoL were lower than the mean healthy population and work productivity impairment led to high indirect costs. The findings suggest the importance of new interventions for optimizing UC outcomes.
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Upadacitinib induction is effective and safe in ulcerative colitis patients including those with prior exposure to tofacitinib: a multicenter real-world cohort study
Robert Gilmore, Richard Fernandes, Imogen Hartley, Arteen Arzivian, Rupert Leong, Bridgette Andrew, Abhinav Vasudevan, Tessa Greeve, Gregory Thomas Moore, Steven Kim, Daniel Lightowler, Abhey Singh, Gillian Mahy, Aditya Mithanthaya, Kannan Venugopaul, Sangwoo Han, Robert Bryant, Jack West, Jonathan Segal, Britt Christensen, Crispin Corte, Nik Ding, Yoon-Kyo An, Jakob Begun
Received August 12, 2024  Accepted October 7, 2024  Published online December 20, 2024  
DOI: https://doi.org/10.5217/ir.2024.00127    [Epub ahead of print]
AbstractAbstract PDFPubReaderePub
Background/Aims
Upadacitinib is a novel selective Janus kinase inhibitor approved for use in ulcerative colitis. Clinical trials had rigorous criteria and excluded many patient subgroups. Given limited real-world effectiveness data, we examined outcomes of patients treated with upadacitinib for ulcerative colitis in a real-world population.
Methods
Patients that commenced upadacitinib for moderate-to-severe ulcerative colitis from September 2022 until March 2023 were identified at 13 inflammatory bowel disease centers across Australia. Clinical, biochemical, endoscopic, and intestinal ultrasound outcomes were recorded retrospectively at baseline, week 8, and week 16.
Results
One hundred and fifty-two patients (61 female [40%], median age 38 years [interquartile range, 28–50]) were included. The primary endpoint of clinical remission was met in 79% at week 8, and 84% at week 16. A total of 42 patients (28%) with prior tofacitinib exposure were included. No significant difference in clinical remission was observed by week 16 between tofacitinib experienced compared to tofacitinib naïve patients (86% vs. 84%, P= 0.67). Complete intestinal ultrasound data was available for 36 patients, showing transmural remission in 64% at week 8 and 81% at week 16, with a decrease in median bowel wall thickness of 2.3 mm and 2.4 mm, respectively.
Conclusions
Upadacitinib resulted in high rates of clinical remission at 8 and 16 weeks in this large real-world cohort of ulcerative colitis patients. Upadacitinib is effective in patients with prior tofacitinib exposure. Intestinal ultrasound shows significant rates of transmural remission at week 8, sustained through week 16.

Citations

Citations to this article as recorded by  
  • Letter: Toward Intra‐Class Switching With JAK Inhibitors?
    Mathieu Uzzan, David Laharie
    Alimentary Pharmacology & Therapeutics.2025;[Epub]     CrossRef
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  • 1 Crossref
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Prevalence and risk factors of gallstone disease in Korean patients with ulcerative colitis
Kwangwoo Nam, Jae Yong Lee, Sang Hyoung Park, Ha Won Hwang, Ho-Su Lee, Kyunghwan Oh, Hee Seung Hong, Kyuwon Kim, Jin Hwa Park, Seung Wook Hong, Sung Wook Hwang, Dong-Hoon Yang, Byong Duk Ye, Jeong-Sik Byeon, Seung-Jae Myung, Suk-Kyun Yang
Received May 21, 2024  Accepted September 23, 2024  Published online November 29, 2024  
DOI: https://doi.org/10.5217/ir.2024.00070    [Epub ahead of print]
AbstractAbstract PDFPubReaderePub
Background/Aims
The prevalence of gallstone disease in patients with ulcerative colitis (UC) is higher than in the general population. However, risk factors of gallstone disease in these patients remain unclear. Thus, we investigated the prevalence and risk factors of gallstone disease in Korean patients with UC.
Methods
Patients diagnosed with UC who underwent abdominal imaging studies between 1997 and 2020 were investigated using a well-established referral center-based large volume inflammatory bowel disease cohort. The prevalence and clinical characteristics of patients with gallstone disease were evaluated and compared with those without gallstone disease.
Results
Overall, 2,811 patients with UC were enrolled. During the follow-up period (mean, 5.7 years), 198 patients (7.0%) were diagnosed with gallstone disease and compared with those without gallstone disease (n = 2,613). The proportion of extensive colitis at maximum extent, primary sclerosing cholangitis (PSC), history of cytomegalovirus, corticosteroid use, immunomodulatory use, colectomy, and appendectomy were significantly higher in the gallstone group (all P< 0.05). In multivariate analyses, age ≥ 60 years at gallstone evaluation (odds ratio [OR], 1.027; 95% confidence interval [CI], 1.002–1.052; P= 0.033), PSC (OR, 6.304; 95% CI, 3.162–12.565; P< 0.001), and history of colectomy (OR, 2.494; 95% CI, 1.222–5.087; P= 0.012) were significant risk factors for gallstone disease in patients with UC.
Conclusions
The prevalence of gallstone disease in Korean patients with UC was 7.0%, and age ≥ 60 years at gallstone evaluation, PSC, and history of colectomy were significant risk factors for UC patients with gallstone disease.
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Review
IBD
Optimizing 5-aminosalicylate for moderate ulcerative colitis: expert recommendations from the Asia-Pacific, Middle East, and Africa Inflammatory Bowel Disease Coalition
Filiz Akyüz, Yoon Kyo An, Jakob Begun, Satimai Aniwan, Huu Hoang Bui, Webber Chan, Chang Hwan Choi, Nazeer Chopdat, Susan J Connor, Devendra Desai, Emma Flanagan, Taku Kobayashi, Allen Yu-Hung Lai, Rupert W Leong, Alex Hwong-Ruey Leow, Wai Keung Leung, Julajak Limsrivilai, Virly Nanda Muzellina, Kiran Peddi, Zhihua Ran, Shu Chen Wei, Jose Sollano, Michelle Mui Hian Teo, Kaichun Wu, Byong Duk Ye, Choon Jin Ooi
Intest Res 2025;23(1):37-55.   Published online November 4, 2024
DOI: https://doi.org/10.5217/ir.2024.00089
AbstractAbstract PDFPubReaderePub
The lack of clear definition and classification for “moderate ulcerative colitis (UC)” creates ambiguity regarding the suitability of step-up versus top-down treatment approaches. In this paper, experts address crucial gaps in assessing and managing moderate UC. The Asia-Pacific, Middle East, and Africa Inflammatory Bowel Disease Coalition comprised 24 experts who convened to share, discuss and vote electronically on management recommendations for moderate UC. Experts emphasized that the goal of treating UC is to attain clinical, biomarker, and endoscopic remission using cost-effective strategies such as 5-aminosalicylates (5-ASAs), well-tolerated therapy that can be optimized to improve outcomes. Experts agreed that 5-ASA therapy could be optimized by maximizing dosage (4 g/day for induction of remission), combining oral and topical administration, extending treatment duration beyond 8 weeks, and enhancing patient adherence through personalized counselling and reduced pill burden. Treatment escalation should ideally be reserved for patients with predictors of aggressive disease or those who do not respond to 5-ASA optimization. Premature treatment escalation to advanced therapies (including biologics and oral small molecules) may have long-term health and financial consequences. This paper provides consensus-based expert recommendations and a treatment algorithm, based on current evidence and practices, to assist decision-making in real-world settings.
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Original Articles
Patient preferences for advanced therapies in ulcerative colitis using conjoint analysis
Taku Kobayashi, Naomi Mizuno, Noriko Sato, Yutaka Kawaguchi, Yoshiko Ikawa, Naruyasu Komorita, Hirono Ishikawa
Received June 28, 2024  Accepted July 22, 2024  Published online October 14, 2024  
DOI: https://doi.org/10.5217/ir.2024.00101    [Epub ahead of print]
AbstractAbstract PDFPubReaderePub
Background/Aims
Selecting an optimal advanced therapy for ulcerative colitis (UC) is difficult because of the increasing number of available therapies. This study assessed UC patients’ preferences for drug profiles in decision-making regarding advanced therapies using conjoint analysis.
Methods
A web-based survey was conducted from October to November 2023 in patients with UC aged ≥ 18 years with prior oral 5-aminosalicylic acid treatment (UMIN000052327). We quantified the importance of drug attributes (location of administration, route/frequency of administration, speed of onset-of-action, maintenancesustainability, risk of serious adverse events within 1 year, and novelty of the drug) and the part-worth utility of attribute levels in mild and severe symptom scenarios, including among employed versus unemployed patients.
Results
Of 372 patients who completed the survey, 365 were evaluated. Patient preferences were generally highly individualized. The route/frequency of administration was the most important attribute in both the mild and severe symptom scenarios. Oral administration was preferred in the mild symptom scenario, whereas no specific preference was observed in the severe symptom scenario. The route/ frequency of administration was more valued in the mild symptom scenario than in the severe one, whereas speed of onset of action was more valued in the severe symptom scenario. No significant difference was found in the preference for drug profiles between employed and unemployed patients.
Conclusions
Patient preferences for the route/frequency of administration, as well as other drug profiles, change with disease severity but demonstrate substantial interindividual variability. Therefore, shared decision-making is important to incorporate patients’ perspectives into the selection of advanced therapies.
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Histologic healing and clinical outcomes in ulcerative colitis
Raymond Fueng-Hin Liang, Huiyu Lin, Cora Yuk-Ping Chau, Wee Chian Lim
Received April 21, 2024  Accepted July 22, 2024  Published online September 19, 2024  
DOI: https://doi.org/10.5217/ir.2024.00058    [Epub ahead of print]
AbstractAbstract PDFPubReaderePub
Background/Aims
Growing evidence suggests histologic healing (HH) improves clinical outcomes in ulcerative colitis (UC) patients beyond endoscopic healing (EH). We hypothesize that HH is associated with better clinical outcomes in Asian UC patients, for whom data is lacking.
Methods
We performed a retrospective study of UC patients in clinical remission (CR) with a follow-up colonoscopy and minimum 1-year follow-up post-colonoscopy. Primary outcome was clinical relapse (CRL), defined as either a Simple Clinical Colitis Activity Index score of > 2, medication escalation, hospitalization or colectomy. Predictors of CRL and HH were assessed.
Results
One hundred patients were included with a median follow-up of 22 months. At index colonoscopy, 80 patients were in EH. On follow-up, 41 patients experienced CRL. Of 80 patients in EH, 34 (42.5%) had persistent histologic activity (Nancy Index ≥ 2) and 29 (36.3%) relapsed during the follow-up period. Amongst patients in CR and EH, those with HH had lower CRL rate (26.1% vs. 50.0%, P= 0.028) and longer CRL-free survival (mean 46.1 months vs. 31.5 months, P= 0.015) than those with persistent histologic activity. On bivariable analysis of 100 patients in CR, HH, and Mayo endoscopic score (MES) of 0 were significantly associated with lower risk of CRL. On multivariable analysis, only MES 0 remained predictive of lower CRL risk.
Conclusions
Above and beyond CR and EH, achieving HH improves clinical outcomes in Asian UC patients. However, HH may not confer incremental benefit if MES 0 has been achieved. Further prospective studies evaluating the benefit of histologically guided therapeutic decisions are needed.
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Case Report
IBD
Combined eosinophilic gastroenteritis and ulcerative colitis successfully treated by vedolizumab: a case report
Hironobu Takedomi, Kayoko Fukuda, Suma Inoue, Nanae Tsuruoka, Yasuhisa Sakata, Shigehisa Aoki, Motohiro Esaki
Intest Res 2025;23(1):107-111.   Published online August 29, 2024
DOI: https://doi.org/10.5217/ir.2024.00013
AbstractAbstract PDFPubReaderePub
A 47-year-old man with over 10 years’ duration of ulcerative colitis treated by 5-aminosalicylic acid and intermittent topical steroids complained of acute epigastric pain. Esophagogastroduodenoscopy revealed diffuse mucosal edema with patchy redness, multiple erosions and nodularity of the stomach. Bioptic examination revealed marked eosinophilic infiltration, confirming the diagnosis of eosinophilic gastroenteritis. Systemic steroid therapy was initiated, whereas his ulcerative colitis and eosinophilia recurred when tapering the steroid. Addition of azathioprine was ineffective, and we subsequently started vedolizumab for eosinophilic gastroenteritis and ulcerative colitis. The medication effectively improved his abdominal symptoms and esophagogastroduodenoscopy and ileocolonoscopy 1 year later revealed endoscopic improvement of both diseases with histologically decreased level of eosinophilic infiltration. Considering that eosinophils also express α4β7 integrins, vedolizumab can be a possible therapeutic candidate for eosinophilic gastroenteritis as well as ulcerative colitis.
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Original Article
IBD
The prevalence of pouch fistulas in ulcerative colitis following restorative proctocolectomy: a systematic review and meta-analysis
Sheng Wei Lo, Ishaan Dharia, Danujan Sriranganathan, Maia Kayal, Edward L. Barnes, Jonathan P. Segal
Intest Res 2025;23(1):56-64.   Published online August 9, 2024
DOI: https://doi.org/10.5217/ir.2024.00009
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Background/Aims
One complication of restorative proctocolectomy with ileo-anal pouch anastomosis is fistula formation in the pouch. Fistulas can be associated with significant morbidity and pouch failure. We conducted a systematic review with meta- analysis to try and understand the prevalence of pouch fistulas in patients with ulcerative colitis following restorative proctocolectomy.
Methods
The Embase, Embase Classic, and PubMed databases were searched between January 1979 and April 2022. Studies were included if there were cross-sectional, case-controlled, population-based or cohort studies reporting on prevalence of pouch fistulas in ulcerative colitis. Studies had to report the number of patients with pouch fistulas using either clinical, endoscopic, or radiological diagnosis in an adult population.
Results
Thirty-three studies screened met the inclusion criteria. The pooled prevalence of developing at least 1 fistula was 0.05 (95% confidence interval [CI], 0.04–0.07). The pooled prevalence of pouch failure in patients with pouch fistula was found to be 0.24 (95% CI, 0.19–0.30). The pooled prevalence of developing a pouch fistula at 3 years, 5 years and more than 5 years was 0.04 (95% CI, 0.02–0.07), 0.05 (95% CI, 0.02–0.07), and 0.05 (95% CI, 0.02–0.10), respectively.
Conclusions
This is the first systematic review and meta-analysis to report the prevalence of pouch fistula. It also provides a pooled prevalence of pouch failure in these patients. These results can help to shape future guidelines, power future studies, and help counsel patients.

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  • Minimally Invasive Rectal Surgery: Current Status and Future Perspectives in the Era of Digital Surgery
    Marta Goglia, Matteo Pavone, Vito D’Andrea, Veronica De Simone, Gaetano Gallo
    Journal of Clinical Medicine.2025; 14(4): 1234.     CrossRef
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Statement
IBD
Management of ulcerative colitis in Taiwan: consensus guideline of the Taiwan Society of Inflammatory Bowel Disease updated in 2023
Hsu-Heng Yen, Jia-Feng Wu, Horng-Yuan Wang, Ting-An Chang, Chung-Hsin Chang, Chen-Wang Chang, Te-Hsin Chao, Jen-Wei Chou, Yenn-Hwei Chou, Chiao-Hsiung Chuang, Wen-Hung Hsu, Tzu-Chi Hsu, Tien-Yu Huang, Tsung-I Hung, Puo-Hsien Le, Chun-Che Lin, Chun-Chi Lin, Ching-Pin Lin, Jen-Kou Lin, Wei-Chen Lin, Yen-Hsuan Ni, Ming-Jium Shieh, I-Lun Shih, Chia-Tung Shun, Tzung-Jiun Tsai, Cheng-Yi Wang, Meng-Tzu Weng, Jau-Min Wong, Deng-Chyang Wu, Shu-Chen Wei
Intest Res 2024;22(3):213-249.   Published online July 29, 2024
DOI: https://doi.org/10.5217/ir.2023.00050
AbstractAbstract PDFPubReaderePub
Ulcerative colitis (UC) is a chronic inflammation of the gastrointestinal tract and is characterized by alternating periods of inflammation and remission. Although UC incidence is lower in Taiwan than in Western countries, its impact remains considerable, demanding updated guidelines for addressing local healthcare challenges and patient needs. The revised guidelines employ international standards and recent research, emphasizing practical implementation within the Taiwanese healthcare system. Since the inception of the guidelines in 2017, the Taiwan Society of Inflammatory Bowel Disease has acknowledged the need for ongoing revisions to incorporate emerging therapeutic options and evolving disease management practices. This updated guideline aims to align UC management with local contexts, ensuring comprehensive and context-specific recommendations, thereby raising the standard of care for UC patients in Taiwan. By adapting and optimizing international protocols for local relevance, these efforts seek to enhance health outcomes for patients with UC.

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  • Short-term and long-term outcomes of acute severe ulcerative colitis in Taiwan: a multicenter study with pre- and post-biologics comparison
    Wei-Chen Lin, Chun-Chi Lin, Wen-Hung Hsu, Feng-Fan Chiang, Chen-Wang Chang, Tzu-Chi Hsu, Deng-Chyang Wu, Horng-Yuan Wang, Jau-Min Wong, Shu-Chen Wei
    Intestinal Research.2025;[Epub]     CrossRef
  • Rescue Therapies for Steroid-refractory Acute Severe Ulcerative Colitis: A Systematic Review and Network Meta-analysis
    Chih-Wen Huang, Hsu-Heng Yen, Yang-Yuan Chen
    Journal of Crohn's and Colitis.2024; 18(12): 2063.     CrossRef
  • High prevalence of vitamin D deficiency in Taiwanese patients with inflammatory bowel disease
    Chen-Ta Yang, Hsu-Heng Yen, Pei-Yuan Su, Yang-Yuan Chen, Siou-Ping Huang
    Scientific Reports.2024;[Epub]     CrossRef
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Original Articles
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.

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  • In which patients with ulcerative colitis would filgotinib be effective?
    Jihye Park
    Intestinal Research.2025; 23(1): 1.     CrossRef
  • 2,269 View
  • 165 Download
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IBD
Filgotinib induction-study baseline characteristics of patients with ulcerative colitis who achieve sustained corticosteroid-free remission: post hoc analysis of the phase 2b/3 SELECTION study
Taku Kobayashi, Axel Dignass, Xavier Roblin, Yoshie Takatori, Toshihiko Kaise, Alessandra Oortwijn, Corinne Jamoul, Toshifumi Hibi
Intest Res 2025;23(1):65-75.   Published online June 14, 2024
DOI: https://doi.org/10.5217/ir.2024.00007
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Background/Aims
Obtaining and maintaining corticosteroid-free remission are important goals of treatment for ulcerative colitis (UC). Characteristics associated with achieving corticosteroid-free remission were assessed in filgotinib-treated patients in SELECTION, a 58-week, phase 2b/3 trial in moderately to severely active UC.
Methods
This post hoc analysis used data from filgotinib-treated patients receiving corticosteroids at maintenance baseline in SELECTION. Univariate logistic regression was performed to assess induction baseline characteristics associated with 6 months of corticosteroid-free remission at week 58, defined as clinical remission without using corticosteroids for at least 6 months.
Results
At maintenance baseline, 92 and 81 patients were receiving corticosteroids in the filgotinib 200 mg and filgotinib 100 mg groups, respectively. Age, body mass index, history of pancolitis, disease duration, fecal calprotectin levels, C-reactive protein levels, Mayo Clinic Score, concomitant corticosteroids, immunomodulators, and aminosalicylates had no statistically significant effect on the likelihood of achieving corticosteroid-free remission. Baseline characteristics associated with increased odds of corticosteroid-free remission were Mayo Clinic Endoscopic Subscore of 2 (vs. 3) in the filgotinib 200 mg and filgotinib 100 mg groups, and female (vs. male) sex, current (vs. former or never) smoking, and being biologic‑naive (vs. experienced) in the filgotinib 200 mg group.
Conclusions
Steroid tapering can be achieved in patients with UC receiving filgotinib 200 mg independently of baseline characteristics such as clinical activity and duration of illness. However, the likelihood of achieving corticosteroid-free remission was higher among patients who were biologic-naive, current smokers, had low endoscopic inflammatory burden and who were female.

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  • In which patients with ulcerative colitis would filgotinib be effective?
    Jihye Park
    Intestinal Research.2025; 23(1): 1.     CrossRef
  • 2,126 View
  • 164 Download
  • 1 Crossref
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Review
IBD
Complex dichotomous links of nonalcoholic fatty liver disease and inflammatory bowel disease: exploring risks, mechanisms, and management modalities
Kanishk Aggarwal, Bhupinder Singh, Abhishek Goel, Durgesh Kumar Agrawal, Sourav Bansal, Sai Gautham Kanagala, Fnu Anamika, Aachal Gupta, Rohit Jain
Intest Res 2024;22(4):414-427.   Published online June 5, 2024
DOI: https://doi.org/10.5217/ir.2024.00001
AbstractAbstract PDFPubReaderePub
Nonalcoholic fatty liver disease (NAFLD) has been shown to be linked to inflammatory bowel disease (IBD) due to established risk factors such as obesity, age, and type 2 diabetes in numerous studies. However, alternative research suggests that factors related to IBD, such as disease activity, duration, and drug-induced toxicity, can contribute to NAFLD. Recent research findings suggest IBD relapses are correlated with dysbiosis, mucosal damage, and an increase in cytokines. In contrast, remission periods are characterized by reduced metabolic risk factors. There is a dichotomy evident in the associations between NAFLD and IBD during relapses and remissions. This warrants a nuanced understanding of the diverse influences on disease manifestation and progression. It is possible to provide a holistic approach to care for patients with IBD by emphasizing the interdependence between metabolic and inflammatory disorders.
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Original Articles
IBD
Early change in serum leucine-rich α-2-glycoprotein predicts clinical and endoscopic response in ulcerative colitis
Ryo Karashima, Shintaro Sagami, Yoko Yamana, Masa Maeda, Aya Hojo, Yusuke Miyatani, Masaru Nakano, Takahisa Matsuda, Toshifumi Hibi, Taku Kobayashi
Intest Res 2024;22(4):473-483.   Published online June 5, 2024
DOI: https://doi.org/10.5217/ir.2023.00135
AbstractAbstract PDFPubReaderePub
Background/Aims
Leucine-rich α-2-glycoprotein (LRG) is a new serum biomarker reflecting the disease activity of ulcerative colitis (UC), but its change during the acute phase has not been enough investigated.
Methods
Patients with UC who initiated the induction therapy with steroid or advanced therapy (biologics or Janus kinase inhibitors) were prospectively enrolled. Associations of LRG, C-reactive protein (CRP) and fecal calprotectin (FC) at baseline, week 1, and week 8 with clinical remission at week 8 and subsequent endoscopic improvement within 1 year (Mayo endoscopic subscore of 0 or 1) were assessed.
Results
A total of 143 patients with UC were included. LRG and CRP at week 1 were significantly lower in the clinical remission group than in the non-remission group (LRG, 20.6 μg/mL vs. 28.4 μg/mL, P< 0.001; CRP, 0.9 mg/dL vs. 2.3 mg/dL, P< 0.001) while FC demonstrated the difference between groups only at week 8. The area under the curves of week 1 LRG, CRP, and FC for week 8 clinical remission using the receiver operating characteristic curves analysis were 0.68, 0.71, and 0.57, respectively. Furthermore, LRG and CRP predicted subsequent endoscopic improvement as early as week 1, while FC was predictive only at week 8.
Conclusions
LRG can be an early-phase biomarker predicting subsequent clinical and endoscopic response to induction therapy.

Citations

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  • The diagnostic accuracy of plasma and serum calprotectin is inferior to C-reactive protein in patients with suspected Crohn’s disease
    M. H. Rasmussen, J. B. Brodersen, C. L. Brasen, J. S. Madsen, T. Knudsen, J. Kjeldsen, M. D. Jensen
    Scandinavian Journal of Gastroenterology.2025; : 1.     CrossRef
  • Changes of leucine-rich alpha 2 glycoprotein could be a marker of changes of endoscopic and histologic activity of ulcerative colitis
    Yuki Aoyama, Sakiko Hiraoka, Eriko Yasutomi, Toshihiro Inokuchi, Takehiro Tanaka, Kensuke Takei, Shoko Igawa, Keiko Takeuchi, Masahiro Takahara, Junki Toyosawa, Yasushi Yamasaki, Hideaki Kinugasa, Jun Kato, Hiroyuki Okada, Motoyuki Otsuka
    Scientific Reports.2025;[Epub]     CrossRef
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IBD
Predictors of histologic remission in patients with biologic-naïve, moderate-to-severe ulcerative colitis treated with first-line biologic agents and small-molecule drugs: a single-center, retrospective cohort study
Kijae Jo, Kwang Woo Kim, Hyun Jung Lee, Jong Pil Im, Joo Sung Kim, Seong-Joon Koh
Intest Res 2024;22(4):453-463.   Published online May 22, 2024
DOI: https://doi.org/10.5217/ir.2024.00044
AbstractAbstract PDFPubReaderePub
Background/Aims
The prevalence and incidence of ulcerative colitis (UC) in Korea is increasing. Each patient has a different disease course and treatment response. Recently, with the development of biologic agents, histological remission has become a treatment goal. In this study, we aimed to identify the predictors of histological remission after first-line biologic agent treatment in patients with biologic agent-naïve UC.
Methods
We retrospectively analyzed the medical records of 92 patients who had been diagnosed with UC and treated with first-line biologic agent treatment at our center, between 2015 and 2022. The clinical characteristics, laboratory test results, and endoscopic and biopsy findings were analyzed. Histological remission was defined as the absence of cryptitis, crypt abscesses, and inflammatory cells on histology. Univariate and multivariate logistic regression analyses were performed to identify the predictors of histological remission after first-line treatment.
Results
Of the total 92 patients, 25 (27.2%) achieved histological remission. Each cohort had a varied body mass index (BMI) distribution, with a statistically significant overweight ratio, as defined by the Asian-Pacific BMI category of 23–25 kg/m2, of 48.0% in the histological remission cohort (P= 0.026). A causal correlation between the overweight category and histological remission was confirmed (odds ratio, 3.883; 95% confidence interval, 1.141–13.212; P= 0.030).
Conclusions
We confirmed that the overweight category was a predictor of histological remission after first-line treatment with a biological agent. However, as BMI does not account for skeletal muscle mass, future studies are required to confirm the correlation between skeletal muscle mass and histological remission.
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Review
IBD
What to do when traditional rescue therapies fail in acute severe ulcerative colitis
Christopher F. D. Li Wai Suen, Matthew C. Choy, Peter De Cruz
Intest Res 2024;22(4):397-413.   Published online May 16, 2024
DOI: https://doi.org/10.5217/ir.2024.00003
AbstractAbstract PDFPubReaderePub
Acute severe ulcerative colitis (ASUC) is a medical emergency that affects approximately 25% of patients with ulcerative colitis at some point in time in their lives. Outcomes of ASUC are highly variable. Approximately 30% of patients do not respond to corticosteroids and up to 50% of patients do not respond to rescue therapy (infliximab or cyclosporin) and require emergency colectomy. Data are emerging on infliximab dosing strategies, use of cyclosporin as a bridge to slower acting biologic agents and Janus kinase inhibition as primary and sequential therapy. In this review, we outline contemporary approaches to clinical management of ASUC in the setting of failure to respond to traditional rescue therapies.

Citations

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  • Intensified infliximab induction therapy for steroid-refractory acute severe ulcerative colitis – Authors’ reply
    Christopher F D Li Wai Suen, Matthew C Choy, Danny Con, Peter De Cruz
    The Lancet Gastroenterology & Hepatology.2025; 10(1): 19.     CrossRef
  • Janus kinase inhibitors in the management of acute severe ulcerative colitis: a comprehensive review
    Javier P Gisbert, María Chaparro
    Journal of Crohn's and Colitis.2025;[Epub]     CrossRef
  • Recent Advances in the Management of Acute Severe Ulcerative Colitis
    Elaine Ong Ming San, Kassem Sharif, Konstantina Rosiou, Michael Rennie, Christian Philipp Selinger
    Journal of Clinical Medicine.2024; 13(23): 7446.     CrossRef
  • 2,666 View
  • 291 Download
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Original Articles
IBD
Changes in the clinical course and prognosis of ulcerative colitis in Chinese populations: a retrospective cohort study
Xinyu Liu, Qingfan Yang, Na Diao, Jian Tang, Zicheng Huang, Xiang Gao, Kang Chao
Intest Res 2024;22(3):357-368.   Published online May 7, 2024
DOI: https://doi.org/10.5217/ir.2023.00106
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Background/Aims
Data on the natural course of Chinese patients with ulcerative colitis (UC) was lacking. This study aimed to evaluate the natural history and prognosis of patients with UC in the past 15 years in China.
Methods
This cohort study included patients with UC in a tertiary hospital in southern China from 2007 to 2021 (cohort I: 2007–2011, cohort II: 2012–2016, cohort III: 2017–2021). Patients’ clinical characteristics and natural history were analyzed retrospectively.
Results
Of 1,139 included patients, 683 patients presented with proctitis or left-sided colitis at diagnosis and 38.5% of them (263/683) developed proximal disease extension. Fifty-eight percent of patients experienced relapse, chronic continuous and intermittent active course. Five patients (0.4%) developed colorectal tumors/dysplasia. The overall surgery rate was 8.6%, and the rates were 14.2%, 7.8%, and 8.0% in the 3 cohorts, respectively (P= 0.059). Average time from diagnosis to surgery decreased from cohorts I to III (144 months vs. 36 months, P< 0.001), so did the use of glucocorticoids (58.2% vs. 43.5%, P< 0.001) and immunosuppressants (14.1% vs. 13.4%, P= 0.016), and days of hospitalization (13 days vs. 9 days, P< 0.001). Biologics were used more frequently during the first year (0.8%, 2.1%, and 13.7% for cohorts I to III, respectively; P< 0.001). The rate of mucosal healing increased over time.
Conclusions
In Chinese UC patients, one-third of patients experienced proximal disease extension. The rates of malignancy and mortality were low. More biologics were used, while use of immunosuppressants and glucocorticoids were reduced over time. Early biologics use seemed to promote mucosal healing, but the rate of colectomy has not dramatically decreased.
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IBD
Efficacy and safety of mirikizumab as induction and maintenance therapy for Japanese patients with moderately to severely active ulcerative colitis: a subgroup analysis of the global phase 3 LUCENT-1 and LUCENT-2 studies
Taku Kobayashi, Katsuyoshi Matsuoka, Mamoru Watanabe, Tadakazu Hisamatsu, Fumihito Hirai, Joe Milata, Xingyuan Li, Nathan Morris, Vipin Arora, Tomoko Ishizuka, Koji Matsuo, Yoichi Satoi, Catherine Milch, Toshifumi Hibi
Intest Res 2024;22(2):172-185.   Published online April 25, 2024
DOI: https://doi.org/10.5217/ir.2023.00043
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Background/Aims
Mirikizumab is a p19-directed anti-interleukin-23 antibody with potential efficacy against ulcerative colitis (UC). We evaluated the efficacy and safety of mirikizumab in a Japanese subpopulation with moderately to severely active UC from the LUCENT-1 and LUCENT-2 studies.
Methods
LUCENT-1 and LUCENT-2 were phase 3, randomized, double-blind, placebo-controlled trials of mirikizumab therapy in adults with moderately to severely active UC. LUCENT-1 was a 12-week induction trial where patients were randomized 3:1 to receive intravenous mirikizumab 300 mg or placebo every 4 weeks (Q4W). Patients achieving a clinical response with mirikizumab following the induction study were re-randomized 2:1 to double-blind treatment with either mirikizumab 200 mg or placebo subcutaneously Q4W during the 40-week maintenance study. The primary outcomes were clinical remission at week 12 of LUCENT-1 and week 40 of LUCENT-2.
Results
A total of 137 patients enrolled in Japan were randomized to mirikizumab (n = 102) or placebo (n = 35). Compared with placebo, patients who received mirikizumab showed numerically higher clinical remission at week 12 of induction (32.4% [n = 33] vs. 2.9% [n = 1]) and at week 40 of maintenance (48.9% [n = 23] vs. 28.0% [n = 7]). A greater number of patients achieved key secondary endpoints in the mirikizumab group compared with placebo. The frequency of treatment-emergent adverse events was similar across mirikizumab and placebo groups. Efficacy and safety results observed in the Japanese subpopulation were generally consistent with those in the overall population.
Conclusions
Mirikizumab induction and maintenance treatments were effective in Japanese patients with moderately to severely active UC. No new safety concerns were identified.

Citations

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  • Mirikizumab – a new option in treatment of inflammatory bowel diseases
    Jakub Olszewski, Katarzyna Kozon, Magdalena Sitnik, Katarzyna Herjan, Karolina Mikołap, Bartłomiej Gastoł, Maciej Bara, Piotr Armański, Marcin Sawczuk
    Prospects in Pharmaceutical Sciences.2024; 22(3): 178.     CrossRef
  • Key Interleukins in Inflammatory Bowel Disease—A Review of Recent Studies
    David Aebisher, Dorota Bartusik-Aebisher, Agnieszka Przygórzewska, Piotr Oleś, Paweł Woźnicki, Aleksandra Kawczyk-Krupka
    International Journal of Molecular Sciences.2024; 26(1): 121.     CrossRef
  • 4,697 View
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Review
IBD
The evolving understanding of histology as an endpoint in ulcerative colitis
Shintaro Akiyama, Yusuke Miyatani, David T. Rubin
Intest Res 2024;22(4):389-396.   Published online March 13, 2024
DOI: https://doi.org/10.5217/ir.2023.00120
AbstractAbstract PDFPubReaderePub
A therapeutic goal for patients with ulcerative colitis (UC) is deep remission including clinical remission and mucosal healing. Mucosal healing was previously defined by endoscopic appearance, but recent studies demonstrate that histological improvements can minimize the risks of experiencing clinical relapse after achieving endoscopic remission, and there is growing interest in the value and feasibility of histological targets of treatment in inflammatory bowel disease, and specifically UC. In this review article, we identify remaining challenges and discuss an evolving role of histology in the management of UC.

Citations

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  • Patients with ulcerative colitis who have normalized histology are clinically stable after de-escalation of therapy
    Shintaro Akiyama, Joëlle St-Pierre, Cindy Traboulsi, Alexa Silfen, Victoria Rai, Tina G. Rodriguez, Amarachi I. Erondu, Joshua M. Steinberg, Seth R. Shaffer, Britt Christensen, David T. Rubin
    npj Gut and Liver.2024;[Epub]     CrossRef
  • 4,193 View
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Original Articles
IBD
Association between nonalcoholic fatty liver disease and incidence of inflammatory bowel disease: a nationwide population‑based cohort study
Ying-Hsiang Wang, Chi-Hsiang Chung, Tien-Yu Huang, Chao-Feng Chang, Chi-Wei Yang, Wu-Chien Chien, Yi-Chiao Cheng
Intest Res 2025;23(1):76-84.   Published online February 21, 2024
DOI: https://doi.org/10.5217/ir.2023.00078
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Background/Aims
Nonalcoholic fatty liver disease (NAFLD) is a common disease with severe inflammatory processes associated with numerous gastrointestinal diseases, such as inflammatory bowel disease (IBD). Therefore, we investigated the relationship between NAFLD and IBD and the possible risk factors associated with the diagnosis of IBD.
Methods
This longitudinal nationwide cohort study investigated the risk of IBD in patients with NAFLD alone. General characteristics, comorbidities, and incidence of IBD were also compared.
Results
Patients diagnosed with NAFLD had a significant risk of developing IBD compared to control individuals, who were associated with a 2.245-fold risk of the diagnosis of IBD and a 2.260- and 2.231-fold of increased diagnosis of ulcerative colitis and Crohn’s disease, respectively (P< 0.001). The cumulative risk of IBD increased annually during the follow-up of patients with NAFLD (P< 0.001).
Conclusions
Our results emphasize that NAFLD significantly impacts its incidence in patients with NAFLD. If patients with NAFLD present with risk factors, such as diabetes mellitus and dyslipidemia, these conditions should be properly treated with regular follow-ups. Furthermore, we believe that these causes may be associated with the second peak of IBD.

Citations

Citations to this article as recorded by  
  • Elucidating the association between nonalcoholic fatty liver disease and incidence of inflammatory bowel disease: a focus on systemic inflammation
    Sihyun Kim, Jong Pil Im
    Intestinal Research.2025; 23(1): 3.     CrossRef
  • Multiomics analysis reveals the potential mechanism of high‐fat diet in dextran sulfate sodium‐induced colitis mice model
    Yuyang Zhao, Zhimin Chen, Ruiyi Dong, Yufan Liu, Yixin Zhang, Yan Guo, Meiyi Yu, Xiang Li, Jiangbin Wang
    Food Science & Nutrition.2024; 12(10): 8309.     CrossRef
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IBD
Ustekinumab for anti-tumor necrosis factor refractory pediatric ulcerative colitis: a promising approach towards endoscopic healing
Rahiya Rehman, Muhammad Safwan Riaz, Dyadin Esharif, Phinnara Has, Michael Herzlinger, Jason Shapiro, Shova Subedi
Intest Res 2024;22(3):351-356.   Published online February 6, 2024
DOI: https://doi.org/10.5217/ir.2023.00091
AbstractAbstract PDFPubReaderePub
Background/Aims
To describe the role of ustekinumab in inducing remission and endoscopic healing in anti-tumor necrosis factor α nonresponsive pediatric ulcerative colitis patients at a tertiary care inflammatory bowel disease center.
Methods
A retrospective chart review was performed on patients with ulcerative colitis receiving ustekinumab. Primary outcome was steroidfree clinical remission at follow-up. Secondary outcomes were biochemical remission and endoscopic healing.
Results
Ten children were analyzed; 7 (70%) had ulcerative colitis, and 3 (30%) had inflammatory bowel disease unspecified with colitis. Median follow-up period was 56 weeks. Nine patients (90%) achieved steroid-free clinical remission and biochemical remission. Seven patients had follow-up colonoscopies, out of which 6 (86%) achieved endoscopic remission, while 1 (14%) underwent colectomy. Out of the 3 patients without a follow-up colonoscopy, fecal calprotectin levels downtrended to < 150 mg/kg in 2 patients and < 400 mg/kg in 1 patient from baseline level of > 2,000 mg/kg.
Conclusions
Ustekinumab appears efficacious in achieving not only clinical and biochemical remission but also has promising role in inducing endoscopic healing end point in patients who fail other biologics.

Citations

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  • Positionspapier der Gesellschaft für Pädiatrische Gastroenterologie und Ernährung (GPGE) zum zulassungsüberschreitenden Gebrauch von für Erwachsene mit CED zugelassenen Biologika und Signalinhibitoren bei Kindern und Jugendlichen
    Jan Däbritz, Martin Classen, Kathrin Krohn, Andreas Krahl, Stephan Buderus, Elke Lainka, Jan de Laffolie, Carsten Posovszky
    Zeitschrift für Gastroenterologie.2025;[Epub]     CrossRef
  • Monoclonal antibodies against pediatric ulcerative colitis: a review of clinical progress
    Debora Curci, Marianna Lucafò, Giuliana Decorti, Gabriele Stocco
    Expert Opinion on Biological Therapy.2024; 24(10): 1133.     CrossRef
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IBD
Association between oral corticosteroid starting dose and the incidence of pneumonia in Japanese patients with ulcerative colitis: a nation-wide claims database study
Katsuyoshi Matsuoka, Tomoyuki Inoue, Hiroaki Tsuchiya, Katsumasa Nagano, Toshiyuki Iwahori
Intest Res 2024;22(3):319-335.   Published online February 6, 2024
DOI: https://doi.org/10.5217/ir.2023.00071
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Background/Aims
A previous study demonstrated that half of patients started oral corticosteroids (OCS) for ulcerative colitis (UC) exacerbations at lower doses than recommended by Japanese treatment guidelines (initial OCS prednisolone equivalent dose, 30–40 mg). This may relate to physician’s concern about infection, especially pneumonia including Pneumocystis jirovecii pneumonia (PJP), from high OCS doses. We assessed whether pneumonia incidence is increased with guideline-recommended OCS initial doses.
Methods
This retrospective cohort study used the Japan Medical Data Center claims database (2012–2021). The whole cohort consisted of all UC patients who started OCS during the study period meeting the inclusion and exclusion criteria. The matched cohort was created by propensity score matching; the lower (initial OCS dose < 30 mg), guideline-recommended (30–40 mg), and higher groups ( > 40 mg) in a 2:2:1 ratio. Pneumonia incidence in the primary analysis was evaluated in the matched cohort. A Poisson regression model determined pneumonia-related risk factors in the whole cohort.
Results
After screening, 3,349 patients comprised the whole cohort; 1,775 patients comprised the matched cohort (lower dose, n = 710; guideline-recommended dose, n = 710; higher dose, n = 355). The incidence of any pneumonia was low; no differences were observed in incidence rates across these dose subgroups. In total, 3 PJP cases were found in the whole cohort, but not detected in the matched cohort. Several risk factors for any pneumonia were identified, including age, higher comorbidities index, treatment in large facility and hospitalization.
Conclusions
The incidence of pneumonia, including PJP, in UC patients was low across initial OCS dose treatment subgroups.
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IBD
Association of colonic metaplasia of goblet cells and endoscopic phenotypes of the J pouch in patients with ulcerative colitis: a retrospective pilot study
Shintaro Akiyama, Tsubasa Onoda, Shoko Moue, Noriaki Sakamoto, Taku Sakamoto, Hideo Suzuki, Tsuyoshi Enomoto, Daisuke Matsubara, Tatsuya Oda, Kiichiro Tsuchiya
Intest Res 2024;22(1):92-103.   Published online January 29, 2024
DOI: https://doi.org/10.5217/ir.2023.00105
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Background/Aims
Mucosal adaptation of the ileum toward colonic epithelium has been reported in pouchitis in ulcerative colitis (UC); however, the clinical characteristics, endoscopic findings, and outcomes in patients with pouchitis with ileal mucosal adaptation are poorly understood.
Methods
This was a single-center retrospective study comprising UC patients treated by proctocolectomy with ileal pouch-anal anastomosis who had undergone pouchoscopy at the University of Tsukuba Hospital between 2005 and 2022. Endoscopic phenotypes were evaluated according to the Chicago classification. High-iron diamine staining (HID) was performed to identify sulfomucin (colon-type mucin)-producing goblet cells (GCs) in pouch biopsies. We compared clinical data between patients with (high HID group) and without > 10% sulfomucin-producing GCs in at least one biopsy (low HID group).
Results
We reviewed 390 endoscopic examination reports from 50 patients. Focal inflammation was the most common phenotype (78%). Five patients (10%) required diverting ileostomy. Diffuse inflammation and fistula were significant risk factors for diverting ileostomy. The median proportion of sulfomucin-producing GCs on histological analysis of 82 pouch biopsies from 23 patients was 9.9% (range, 0%–93%). The duration of disease was significantly greater in the high HID group compared to the low HID group. The median percentage of sulfomucin-producing GCs was significantly higher in patients with diffuse inflammation or fistula compared to other endoscopic phenotypes (14% vs. 6.0%, P= 0.011).
Conclusions
Greater proportions of sulfomucin-producing GCs were observed in endoscopic phenotypes associated with poor outcomes in UC, indicating patients with pouchitis showing colonic metaplasia of GCs may benefit from early interventions.

Citations

Citations to this article as recorded by  
  • Endoscopic assessment of the J pouch in ulcerative colitis: A narrative review
    Shintaro Akiyama, Edward L Barnes, Tsubasa Onoda, Naoki Ishikawa, Mamiko Shiroyama, Yuka Ito, David T Rubin, Kiichiro Tsuchiya
    DEN Open.2025;[Epub]     CrossRef
  • A Comparative Analysis of Clinical Symptoms and Modified Pouchitis Disease Activity Index Among Endoscopic Phenotypes of the J Pouch in Patients With Inflammatory Bowel Disease
    Shintaro Akiyama, Nathaniel A Cohen, Jacob E Ollech, Cindy Traboulsi, Tina Rodriguez, Victoria Rai, Laura R Glick, Yangtian Yi, Joseph Runde, Russell D Cohen, Kinga B Skowron, Roger D Hurst, Konstantin Umanskiy, Benjamin D Shogan, Neil H Hyman, Michele A
    Crohn's & Colitis 360.2024;[Epub]     CrossRef
  • 2,747 View
  • 151 Download
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IBD
Sarcopenia is common in ulcerative colitis and correlates with disease activity
Pardhu B Neelam, Rimesh Pal, Pankaj Gupta, Anupam K Singh, Jimil Shah, Harshal S Mandavdhare, Harjeet Singh, Aravind Sekar, Sanjay K Bhadada, Usha Dutta, Vishal Sharma
Intest Res 2024;22(2):162-171.   Published online January 22, 2024
DOI: https://doi.org/10.5217/ir.2023.00090
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Background/Aims
Association of sarcopenia with disease severity in ulcerative colitis (UC) is not clearly defined. We planned to estimate the prevalence of sarcopenia in patients with UC as per the revised definition and its relation with the disease severity.
Methods
A cross-sectional assessment of sarcopenia in patients with UC was performed. Disease activity was graded according to complete Mayo score. Hand grip strength was assessed with Jamar hand dynamometer, muscle mass using a dual energy X-ray absorptiometry scan, and physical performance with 4-m walk test. Sarcopenia was defined as a reduction of both muscle mass and strength. Severe sarcopenia was defined as reduced gait speed in presence of sarcopenia.
Results
Of 114 patients (62 males, mean age: 36.49±12.41 years), 32 (28%) were in remission, 46 (40.4%) had mild-moderate activity, and 36 (31.6%) had severe UC. Forty-three patients (37.7%) had probable sarcopenia, 25 (21.9%) had sarcopenia, and 14 (12.2%) had severe sarcopenia. Prevalence of sarcopenia was higher in active disease (2 in remission, 6 in active, and 17 in severe, P<0.001). Of 14 with severe sarcopenia, 13 had severe UC while 1 had moderate UC. On multivariate analysis, lower body mass index and higher Mayo score were associated with sarcopenia. Of 37 patients with acute severe colitis, 16 had sarcopenia. Requirement of second-line therapy was similar between patients with and without sarcopenia. On follow-up (median: 18 months), there was a non-significant higher rate of major adverse events in those with sarcopenia (47.4% vs. 33.8%, P=0.273).
Conclusions
Sarcopenia and severe sarcopenia in UC correlate with the disease activity.

Citations

Citations to this article as recorded by  
  • Sarcopenia and frailty in inflammatory bowel disease: Emerging concepts and evidence
    Pardhu B Neelam, Alka Sharma, Vishal Sharma
    JGH Open.2024;[Epub]     CrossRef
  • Utility of SARC‐F for screening for sarcopenia in ulcerative colitis
    Pardhu B. Neelam, Vishal Sharma
    Nutrition in Clinical Practice.2024; 39(5): 1270.     CrossRef
  • Response to “Utility of SARC‐F for screening for sarcopenia in ulcerative colitis”
    Ilkay Ergenc, Chasan Ismail Basa, Alper Uzum, Sevval Sahin, Haluk Tarık Kani, Rahmi Aslan, Aslı Tufan, Özgür Kasımay, Özlen Atuğ, Yeşim Özen Alahdab
    Nutrition in Clinical Practice.2024; 39(5): 1272.     CrossRef
  • Sarcopenia and low prognostic nutritional index as markers of disease activity in patients with inflammatory bowel disease and predictors of poor outcome: a cohort longitudinal study
    Mirella Sherif, Rabab Fouad, Tamer Elbaz, Maryse Awadalla, Omnia Tantawi, Mohamed Negm, Dalia Abd El-kareem, Ibrahim Naguib, Hany Shehab, Hedy A. Badary
    Egyptian Rheumatology and Rehabilitation.2024;[Epub]     CrossRef
  • 4,731 View
  • 276 Download
  • 4 Web of Science
  • 4 Crossref
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