Abstract
Fecal microbiota transplantation (FMT) has been investigated as a treatment option for patients with inflammatory bowel disease with controversial results.We sought to perform a systematic review and meta-analysis to evaluate the benefit of FMT in patients with ulcerative colitis. Double-blind randomized controlled trials (RCTs) including adult patients with active ulcerative colitis who received either FMT or placebo were eligible for inclusion. Outcomes of interest included the rate of combined clinical and endoscopic remission, endoscopic remission or response, clinical remission or response, and specific adverse events. The results were pooled together using Reviewer Manager 5.4 software. Publication bias was assessed using the Egger's test. Six RCTs involving 324 patients were included. Our findings demonstrate that compared with placebo, FMT has significant benefit in inducing combined clinical and endoscopic remission (odds ratio, 4.11; 95% confidence interval, 2.19-7.72; P < .0001). Subgroup analyses of influencing factors showed no differences between pooled or single stool donors (P = .71), fresh or frozen FMT (P = .35), and different routes or frequencies of delivery (P = .80 and .48, respectively). Pre-FMT antibiotics, bowel lavage, concomitant biologic therapy, and topical rectal therapy did not affect combined remission rates (P values of .47, .38, .28, and .40, respectively). Clinical remission or response and endoscopic remission or response were significantly higher in patients who received FMT compared with placebo (P < .05) without any differences in serious or specific adverse events. FMT demonstrated a clinical and endoscopic benefit in the short-term treatment of active ulcerative colitis, with a comparable safety profile to placebo. Future RCTs are required to standardize study protocols and examine data on maintenance therapy.
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