Standardized Fecal Microbiota Transplantation for Crohn's Diseases

The gut microbiota is considered to constitute a "microbial organ" which has pivotal roles in the intestinal diseases and body's metabolism. Evidence from animal and human studies strongly supports the link between intestinal bacteria and inflammatory bowel diseases (IBD). Dozens of studies reported its efficacy in treatment of severe Clostridium difficile colitis. Preliminary studies using fecal microbiota transplantation (FMT) for Ulcerative Colitis (UC), Crohn's diseases (CD), irritable bowel syndrome (IBS) and constipation have also met with some success. However, the results on CD is very limited. This marks the initial step in exploring the potential efficacy of fecal bacteriotherapy for CD. The investigators aim to evaluate the effectiveness, durability, and safety of FMT in a cohort of at least 500 patients with CD over a ten-year period

The present clinical trial aims to re-establish a gut functionality state of intestinal flora through FMT as a therapy for CD (all age range,HBI\>4). We established a standard microbiota isolation from donated fresh stool in lab. The microbiota is then transplanted into the intestine via endoscopy or other established methods, such as mid-gut or colonic transendoscopic enteral tubing. Patients from multi-clinical centers in this study will be assigned to receive FMT or traditional treatments according to associated guidelines and follow-up for at least one year. Blood tests, imaging, endoscopy and questionnaire will be used to assess participants at study start and at study completion.