Use of Fecal transplantation with a novel diet for mild to moderate active ulcerative colitis: The CRAFT UC randomized controlled trial.
2021
Background We evaluated whether integration of novel diets for donors and patients in addition to fecal transplantation (FT) could increase FT remission rate in refractory ulcerative colitis (UC). Methods This was a blinded randomized controlled trial in adults with active UC, defined by a simple clinical colitis activity index (SCCAI) of ≥5 and ≤ 11 and endoscopic Mayo score 2-3, refractory to medication. Group 1 received free diet and single donor standard FT by colonoscopy on day 1and rectal enemas on days 2 and 14 without dietary conditioning of the donor. Group 2: FT as above but with dietary pre-conditioning of the donor for 14 days and a UC Exclusion Diet (UCED) for the patients. Group 3 received the UCED alone. The primary endpoint was week 8 clinical steroid free remission, defined as SCCAI Results Sixty two of 96 planned patients were enrolled. Remission week 8 Group 1 was 2/17 (11.8%), Group 2 4/19 (21.1%), Group 3 6/15 (40%) (NS). Endoscopic remission was Group 1 2/17 (12%), Group 2 3/19 (16%), Group 3 4/15 (27%) (Group 1 vs.3 p=0.38). Mucosal healing (Mayo 0) was achieved only in Group 3 (3/15, 20%) vs. 0/36 FT patients (p=0.022). Exacerbation of disease occurred in 3/17 (17.6%) Group 1, 4/19 (21.1%) Group 2, and 1/15 (6.7%) Group 3 (Group 2 vs.3, p=0.35). Conclusions UCED alone appeared to achieve higher clinical remission and mucosal healing than single donor FT with or without diet. The study was stopped for futility by a safety monitoring board.
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