Abstract
Purpose
Fecal microbiota transplantation (FMT) has been found to be a potential treatment for Crohn's disease (CD). We sought to perform a systematic review and meta-analysis to evaluate the efficacy and safety of FMT in CD.
Methods
Electronic databases were searched for studies until January 2023. Clinical remission was established as the primary outcome. The secondary outcome was clinical response, endoscopic remission, minor adverse events, serious adverse events, and changes in disease activity indices, biochemical indicators, and microbial diversities. Pooled effect sizes and 95% confidence intervals (CIs) were calculated under the random effects model.
Results
Eleven cohort studies and one randomized controlled trial involving 228 patients were included. In a meta-analysis, the pooled proportion of adult patients with active CD that achieved clinical remission 2 to 4 weeks after FMT was 57% (95% CI = 49–64%) with a low risk of heterogeneity (I2 = 37%). Furthermore, our results showed that FMT significantly (standardized mean difference = −0.66; 95% CI = −1.12 to −0.20; I2 = 0) reduced Crohn’s disease activity index scores 4 to 8 weeks after FMT. Subgroup analyses showed no difference between FMT methodologies, except for pre-FMT treatment with antibiotics (P = 0.02). Most adverse events were self-limiting and disappeared spontaneously within hours or days after FMT. Microbiota analysis showed an increased Shannon diversity and a shift toward donor-like microbiome after FMT.
Conclusion
FMT could be a promising therapy in the short-term treatment of active CD. More placebo-controlled randomized trials with a long-term follow-up treatment are necessary.
Trial registration
https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42022322694 No. CRD42022322694.
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Data availability
The data underlying this article are available in the article and in its online supplementary material.
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This study was supported by CNS-ZD Tizhi and Health Fund (CNS-ZD2020-21) and Key Research and Development Project of Hubei Province (2020BCA081-03).
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The following authors’ contributions are acknowledged: Siyu Zhou: literature search, data collection, data analysis, manuscript writing, and editing; Ying Cui: literature search, data collection, and data analysis; Yun Zhang, Tianyu Zhao: critical revision of the manuscript; and Jing Cong: project development, manuscript revision, and proofreading. All authors discussed the results and contributed to writing and proofreading the final manuscript. All authors approved the final version of the manuscript.
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Zhou, S., Cui, Y., Zhang, Y. et al. Fecal microbiota transplantation for induction of remission in Crohn’s disease: a systematic review and meta-analysis. Int J Colorectal Dis 38, 62 (2023). https://doi.org/10.1007/s00384-023-04354-4
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DOI: https://doi.org/10.1007/s00384-023-04354-4