Short-term results of adipose-derived stem cell therapy for the treatment of complex perianal fistula A single center experience.

Early human evidence such as case series or small samples is exploring possible benefits.

• 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)

In this study, we aimed to investigate the early results of the safety and efficacy of adipose-derived stem cells (ADSCs) injection along with the repair of the internal orifice in the recovery of complex perianal fistula. The study included patients who underwent autologous adipose tissue-derived stemcell injection for complex perianal fistula between December2017 and January2018. The FDA-approved Lipogems® system was used to prepare autologous micro-fragmented adipose stem cells. Demographic characteristics, history of inflammatory bowel disease, fistula type and length of fistula tract determined by endoanal ultrasound, mean operation duration, postoperative complications, and fistula healing of the patients were evaluated. Fistula healing was evaluated on the 30th ,90th days and 9th months. A total of 10 patients, with male predominance, were included in our study. The mean age was 47±13.1 and mean BMI was 28.3±4.79. None of the patients had inflammatory bowel disease Based on endoanal ultrasound findings, fistula type was transsphincteric, extrasphincteric and suprasphincteric for 7, 2 and 1 patients, respectively. Calculated length of fistula tract based on ultrasound was 4.45±1.69(2.5-6.4). Mean duration of operation was 45±7 minutes. None of the patients had any treatment related toxicity, however, two patients experienced bruising at the liposuction site. Healing rate

Evidence level

Early human evidence such as case series or small samples is exploring possible benefits.

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