Target Engagement of EXL01 in the Prevention of Post-operative Recurrence of Crohn's Disease

Inclusion Criteria: * Is male or female aged ≥18 years at the time of providing documented informed consent. * Has a diagnosis of CD with ileal involvement (ileal only or ileocolonic; L1 or L3 in Montreal classification) for at least 3 months prior to Screening. * Has undergone an ileocecal resection or iterative ileo-colonic resection, as per institutional SoC, between 5 days to 5 weeks before randomization. * Is scheduled, in SoC context, to receive no treatment for CD or anti-TNF agents in the 6 months after surgery Exclusion Criteria: * Has a not recovered adequately from any toxicity and/or complications from the surgery before the first dose of study intervention * Has a current stoma. Inclusion will be possible after continuity restoration (during the 5 weeks following continuity restoration) * Has active anal fistula * Is scheduled, according to SoC, to receive a biotherapy at the exception of anti-TNF agent in the 6 months after surgery * Has had more than 2 past small bowel resections or cumulated intestinal resection superior to 50 cm * Has a contraindication to endoscopy or anaesthesia. * Is receiving antibiotics at time of randomization or is likely to require antibiotic treatment within 6 weeks of the first dose of EXL01 or placebo. * Has a history of hypersensitivity to EXL01 and/or any excipients, which are listed in the Investigator Brochure (IB), and/or to soybean or soy-containing products. * Has a not recovered adequately from any toxicity and/or complications from the surgery before the first dose of study intervention * Has a current stoma. Inclusion will be possible after continuity restoration (during the 5 weeks following continuity restoration) * Has active anal fistula * Is scheduled, according to SoC, to receive a biotherapy at the exception of anti-TNF agent in the 6 months after surgery * Has had more than 2 past small bowel resections or cumulated intestinal resection superior to 50 cm * Has a contraindication to endoscopy or anaesthesia. * Is receiving antibiotics at time of randomization or is likely to require antibiotic treatment within 6 weeks of the first dose of EXL01 or placebo. * Has a history of hypersensitivity to EXL01 and/or any excipients, which are listed in the Investigator Brochure (IB), and/or to soybean or soy-containing products.