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JOURNAL ARTICLE
META-ANALYSIS
REVIEW
Treatment efficacy and safety of low-dose azathioprine in chronic active ulcerative colitis patients: A meta-analysis and systemic review.
Journal of Digestive Diseases 2016 October
OBJECTIVE: To evaluate the efficacy and safety of low-dose azathioprine (AZA) in treating patients with chronic active ulcerative colitis (UC).
METHODS: A literature search of Medline, Embase, the Cochrane Library, Web of Science, Wanfang Database, CNKI, SinoMed, VIP Chinese Science and the Technology Journals Database was conducted to identify eligible studies that evaluated the efficacy and safety of low-dose azathioprine (AZA) in treating patients with chronic active UC published up to 15 July 2015. Data were extracted from the studies, including clinical efficacy (response rate, adverse drug reaction [ADR] rate, steroid withdrawal rate and relapse rate) and endoscopic improvement (endoscopic remission rate and mucosal healing rate).
RESULTS: Six studies with 211 patients were eligible for the analysis. The overall response rates after 6 and 12 months of treatment were 78.0% (95% confidence interval [CI] 71.0-85.0%) and 88.0% (95% CI 80.0-96.0%), respectively. The overall ADR rate was 25.0% (95% CI 18.0-31.0%). Endoscopic response rate was around 85.0%, while the endoscopic remission rates and mucosal healing rates after 6 and 12 months of treatment were above 60.0% and 70.0%, respectively. The steroid withdrawal rate and relapse rate were in moderate to high heterogeneity. Egger's test indicated that there was no publication bias for studies regarding the 6-month response rate and ADR rate.
CONCLUSIONS: Low-dose AZA is effective and safe in the treatment of chronic active UC patients. However, randomized controlled trials with large sample sizes are needed to draw definitive conclusions.
METHODS: A literature search of Medline, Embase, the Cochrane Library, Web of Science, Wanfang Database, CNKI, SinoMed, VIP Chinese Science and the Technology Journals Database was conducted to identify eligible studies that evaluated the efficacy and safety of low-dose azathioprine (AZA) in treating patients with chronic active UC published up to 15 July 2015. Data were extracted from the studies, including clinical efficacy (response rate, adverse drug reaction [ADR] rate, steroid withdrawal rate and relapse rate) and endoscopic improvement (endoscopic remission rate and mucosal healing rate).
RESULTS: Six studies with 211 patients were eligible for the analysis. The overall response rates after 6 and 12 months of treatment were 78.0% (95% confidence interval [CI] 71.0-85.0%) and 88.0% (95% CI 80.0-96.0%), respectively. The overall ADR rate was 25.0% (95% CI 18.0-31.0%). Endoscopic response rate was around 85.0%, while the endoscopic remission rates and mucosal healing rates after 6 and 12 months of treatment were above 60.0% and 70.0%, respectively. The steroid withdrawal rate and relapse rate were in moderate to high heterogeneity. Egger's test indicated that there was no publication bias for studies regarding the 6-month response rate and ADR rate.
CONCLUSIONS: Low-dose AZA is effective and safe in the treatment of chronic active UC patients. However, randomized controlled trials with large sample sizes are needed to draw definitive conclusions.
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