Fecal transplantation for ulcerative colitis from diet conditioned donors followed by dietary intervention results in favorable gut microbial profile compared to fecal transplantation alone.

FMT from diet conditioned donors followed by the UCED led to microbial alterations associated with favorable microbial profile which correlated with decreased fecal calprotectin. Our findings support further exploration of additive benefit of dietary intervention for both donors and patients undergoing FMT as a potential treatment of UC.