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Efficacy and safety of Chinese medicine JCM-16021 for diarrhea-predominant irritable bowel syndrome: study protocol for a multi-center, randomized, double-blind, placebo controlled clinical trial
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Abstract
Background: Irritable bowel syndrome (IBS) is a common gastrointestinal functional disease. Adults with IBS may experience abdominal pain, change of bowel habits, and abnormal stool form without organic disease. IBS can seriously affect their work productivity and quality of life, especially diarrhea-predominant irritable bowel syndrome (IBS-D). The Chinese medicine JCM-16021 has been shown to be potentially effective in improving the symptoms of IBS-D based on a small scale clinical trial. Hence, a large scale clinical study is designed to further evaluate the efficacy and safety of the Chinese medicine JCM-16021 for IBS-D with traditional Chinese medicine (TCM) pattern of Liver Stagnation and Spleen Deficiency (LSSD). Methods: This study is a multi-center, randomized, double-blind, placebo-controlled clinical trial. 392 eligible participants will be enrolled with 2-week run-in, 8-week treatment and 8-week follow-up. After run-in period, participants will be randomized to receive either the Chinese medicine JCM-16021 or placebo for 8 weeks, and will have post-treatment follow up for another 8 weeks. The primary outcome is the improvement rate on the global assessment of improvement (GAI) at week 10. The secondary outcomes consist of changes of IBS-D symptoms, TCM pattern improvement, IBS-Quality of Life (IBS-QoL), IBS-Symptom Severity Score (IBS-SSS), safety, etc. Results: A standard protocol has been developed for the study. The protocol will provided a detailed procedure to conduct a clinical trial and verify if the Chinese medicine JCM-16021 would significantly improve the overall symptoms of IBS-D with LSSD pattern of TCM by relieving abdominal pain, reducing stool frequency, improving the stool consistency and improving quality of life. The consolidated evidence from the study can shed light on the treatment of IBS-D with Chinese medicine. Conclusion: The protocol will provide details for investigators about the study following SPIRIT Statement. High-quality evidence on the efficacy and safety of Chinese medicine JCM-16021 for IBS-D will be provided through strict compliance with the protocol. Trial registration : ClinicalTrial.gov identifier: NCT03457324. Registered 8 February 2018, https://clinicaltrials.gov/ct2/show/NCT03457324?term=NCT03457324&draw=2&rank=1
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“These randomized clinical trials demonstrated that JCM-16021 alleviates abdominal pain in patients with IBS-D [52,54].”
From Plant-Derived Treatments for IBS: Clinical Outcomes, Mechanistic Insights, and Their Position in International Guidelines (2026) · cites this paper as [52]
In the citing paper
“Three Chinese herbal preparations that have been studied in clinical trials in IBS patients and demonstrated beneficial effects are the following:”
From Plant-Derived Treatments for IBS: Clinical Outcomes, Mechanistic Insights, and Their Position in International Guidelines (2026) · cites this paper as [52]
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Citations
Cites
The REDCap consortium: building an international community of software platform partners
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Global Prevalence of and Risk Factors for Irritable Bowel Syndrome: A Meta-analysis
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“Irritable bowel syndrome‐quality of life The health-related quality of life of participants will be measured with validated Irritable Bowel SyndromeQuality of Life (IBS-QoL) questionnaire, which includes 34 items and involves eight aspects: dysphoria (Q1), interference with activity (Q2), body image (Q3), health worry…”
MethodDesign of Treatment Trials for Functional Gastrointestinal Disorders
Irvine, E. J., Tack, J., Crowell, M. D., Gwee, K. A., Ke, M., Schmulson, M. J., Whitehead, W. E., & Spiegel, B. (2016) · Gastroenterology · doi:10.1053/j.gastro.2016.02.010 · Cited by 550
Eluxadoline for Irritable Bowel Syndrome with Diarrhea
Lembo, A. J., Lacy, B. E., Zuckerman, M. J., Schey, R., Dove, L. S., Andrae, D. A., Davenport, J. M., McIntyre, G., Lopez, R., Turner, L., et al. (2016) · New England Journal of Medicine · doi:10.1056/nejmoa1505180 · Cited by 334 · cited 2×
“Bristol stool scale is defined as 7-point Scale in which a score of 1 = separate hard lumps, 2 = sausage shaped but lumpy, 3 = sausagelike with cracks on the surface, 4 = sausage-like but smooth and soft, 5 = soft blobs with clear cut edges, 6 = fluffy pieces with ragged edges, and 7 = watery with no solid pieces [26].”
BackgroundClinical trial guidelines for pharmacological treatment of irritable bowel syndrome
Corazziari, E., Bytzer, P., Delvaux, M., Holtmann, G., Malagelada, J. R., Morris, J., Muller‐Lissner, S., Spiller, R. C., Tack, J., & Whorwell, P. J. (2003) · Alimentary Pharmacology & Therapeutics · doi:10.1046/j.1365-2036.2003.01709.x · Cited by 80 · cited 1×
“According to the previous clinical trial guidelines for pharmacological treatment of IBS, a 15% improvement of the global outcome measure over placebo could be considered as a clinically significant therapeutic gain [31].”
Method
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Cited by
Pastras, P., Aggeletopoulou, I., Bali, M., & Triantos, C. (2026) · Nutrients · doi:10.3390/nu18020183 · Cited by 1
Metadata
- Authors
- Zheng, Y., Ching, J., Cheng, C. W., Lam, W. C., Chan, K. L., Zhang, X., Lam, P. Y., Wu, X. Y., Zhong, L. L. D., Cao, P. H., Lo, C. W., Cheong, P. K., Lin, Z., Koh, M., Wu, J., & Bian, Z. X.
- ORCID
- Bian, Zhao Xiang
- Venue
- Chinese Medicine
- Published
- 2021-11-13
- Volume
- 16
- Issue
- 1
- ISSN
- 1749-8546
- Cited by
- 15
- References
- 9
- Language
- en
- Licence
- creativecommons.org/licenses/by/4.0 (tdm)
- creativecommons.org/licenses/by/4.0 (vor)
- Funders
- The Innovative Technology Commission of HKSAR, China (ITS-148-14FP)
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- Zheng, Y., Ching, J., Cheng, C. W., Lam, W. C., Chan, K. L., Zhang, X., Lam, P. Y., Wu, X. Y., Zhong, L. L. D., Cao, P. H., Lo, C. W., Cheong, P. K., Lin, Z., Koh, M., Wu, J., & Bian, Z. X. (2021). Efficacy and safety of Chinese medicine JCM-16021 for diarrhea-predominant irritable bowel syndrome: study protocol for a multi-center, randomized, double-blind, placebo controlled clinical trial. Chinese Medicine. https://doi.org/10.1186/s13020-021-00530-2
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