The efficacy of adipose-derived stem cell therapy for complex perianal fistulas in Crohn's disease patients: A systematic review.

Relatively higher-quality human studies compared with other topics in this database, e.g. multiple RCTs or systematic reviews. This does not mean it is standard or approved care.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Background Crohn's disease (CD) is a chronic inflammatory bowel disease (IBD) that often leads to the development of complex perianal fistulas, significantly impairing patients' quality of life. Conventional medical and surgical treatments offer limited long-term efficacy, with high recurrence rates and associated complications. Adipose-derived stem cell therapy (ADSCT) has emerged as a promising regenerative therapy due to its anti-inflammatory and tissue-regenerative properties. However, discrepancies in clinical outcomes across studies warrant a systematic evaluation of its efficacy and safety. Objective This systematic review aims to critically assess the efficacy, safety, and recurrence rates of ADSCT for complex perianal fistulas in Crohn's disease patients, summarizing data from randomized controlled trials and observational studies. Methods This review included 19 studies published between 2009 and 2024 involving Crohn's disease patients treated with either autologous or allogeneic ADSCT. Extracted data included patient demographics, fistula characteristics, treatment protocols, and clinical outcomes such as fistula closure, partial healing, time to healing, recurrence, and adverse events. Study selection followed the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines and is illustrated in a PRISMA flow diagram. Risk of bias was asses

Evidence level

Relatively higher-quality human studies compared with other topics in this database, e.g. multiple RCTs or systematic reviews. This does not mean it is standard or approved care.

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