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Effectiveness and Safety of Fecal Microbiota Transplantation for Recurrent Clostridioides difficile Infection in Immunocompromised Patients.

P. Berry,R. Tariq,Darrell S. Pardi,S. Khanna

Published 2025 in Clinical Gastroenterology and Hepatology

ABSTRACT

BACKGROUND Clostridioides difficile infection (CDI) poses a significant health risk to immunocompromised hosts due to the increased risk of severe infection and recurrence. Microbiota-based therapies have emerged as a promising strategy for CDI, but safety and efficacy in immunocompromised populations remain underexplored. METHODS A comprehensive literature search across Ovid MEDLINE(R), Ovid EMBASE, Clinicaltrials.gov, and Scopus from inception until December 16, 2024, identified studies meeting inclusion criteria, covering fecal microbiota transplantation (FMT) for recurrent CDI (rCDI) in immunocompromised individuals, including those on immunosuppressants, transplant recipients, undergoing chemotherapy, and with advanced HIV. Case reports and studies not separately reporting outcomes in immunocompromised patients were excluded. Statistical analysis was performed using random-effects models to account for heterogeneity among studies. RESULTS A total of 44 studies (31 full-text articles, 13 abstracts) were included, comprising 3,476 participants, of whom 1,208 were immunocompromised. The population included solid organ transplant recipients (n=219), cancer patients on chemotherapy (n=101), hematopoietic stem cell transplant recipients (n=29), and advanced HIV patients (n=11). The most common FMT route was colonoscopy (n=12 studies), followed by upper gastrointestinal routes, capsules, and rectal retention enemas. The clinical resolution rate after a single FMT was 75.3% (95% CI 71.7%-78.6%), increasing to 87.4% (95% CI 84.8%-89.6%) with consecutive treatments. The recurrence rate was 23.9% (95% CI 19.2%-29.4%), and the serious adverse event rate was 10.1% (95% CI 6.7%-14.8%). CONCLUSIONS The safety and effectiveness outcomes of FMT in mild to moderately immunocompromised populations for recurrent CDI are comparable to those in immunocompetent cohorts.

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