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A Study to Investigate Efficacy and Safety of SAR442970 in Patients With Crohn's Disease

Basic Information

Recruitment status	Recruiting
Health condition(s) or Problem(s) studied	Crohn's Disease
Date of first enrollment	01/08/2025
Target sample size	99
Countries of recruitment	TBD,Japan
Study type	Interventional
Intervention(s)	Drug: SAR442970 Route of Administration: Subcutaneous Drug: Placebo Route of Administration: Subcutaneous Study Arms: Experimental: SAR442970 Dose Regimen A - Participants will receive SAR442970 dose regimen A. Experimental: SAR442970 Dose Regimen B - Participants will receive SAR442970 dose regimen B. Placebo Comparator: Placebo - Participants will receive placebo.

Outcome(s)

Primary Outcome

1. Percentage of participants who achieve endoscopic response at Week 16 [Time Frame: From Baseline to Week 16] Endoscopic response is defined as decrease in Simple Endoscopic Score for Crohn's Disease (SES-CD) >50% from baseline (or a decrease of at least 2 points for subjects with a baseline score of 4 or more and isolated ileal disease) based on central reading. The SES-CD evaluates 4 endoscopic variables (ulcer size, ulcerated surface, affected surface, and narrowing), each on a scale from 0 (none) to 3 in 5 segments assessed during ileocolonoscopy. The total score is the sum of the 4 endoscopic variable scores and ranges from 0 to 56, where higher scores indicate more severe disease.

Secondary Outcome

1. Percentage of participants who achieve clinical remission based on Crohn's Disease Activity Index (CDAI) at Week 16 [Time Frame: At Week 16] CDAI clinical remission is defined as CDAI score <150. CDAI is a composite instrument that includes participant symptoms evaluated over 7 days (abdominal pain, stool frequency and general well-being), as well as presence of complications (arthritis/arthralgia, iritis/uveitis, erythema nodosum/pyoderma gangrenosum/aphthous stomatitis, anal fissure/fistula/abscess, other fistula, and fever), the use of antidiarrheal medicines, presence of an abdominal mass, hematocrit, and body weight. These items are scored individually, weighted, and do not contribute equally to the overall score. The CDAI is derived from summing up the weighted individual scores of eight items. CDAI approximately ranges from 0 to 600 with higher scores indicating more severe disease. 2. Percentage of participants who achieve Patient Reported Outcome (PRO)-2 clinical remission at Week 16 [Time Frame: At Week 16] PRO-2 clinical remission is defined as using the average daily stool frequency <=3 and not worse than baseline and average daily abdominal pain <=1 and not worse than baseline. 3. Percentage of participants who achieve endoscopic remission based on centrally read SES-CD at Week 16 [Time Frame: At Week 16] Endoscopic remission is defined as SES-CD <=4 and at least 2 point reduction versus baseline and no subscore >1 in any individual variable based on central reading. 4. Percentage of participants who achieve both clinical remission based on CDAI score and endoscopic response based on SES-CD at Week 16 [Time Frame: At Week 16] CDAI clinical remission is defined as CDAI score <150, endoscopic response is defined as a decrease in SES-CD >50% from baseline (or a decrease of at least 2 points for subjects with a baseline score of 4 or more and isolated ileal disease) based on central reading. 5. Percentage of participants who achieve CDAI clinical response at Week 16 [Time Frame: At Week 16] CDAI clinical response is defined as reduction of CDAI >=100 points from baseline. 6. Change from baseline in the Inflammatory Bowel Disease Questionnaire (IBDQ) score [Time Frame: From Baseline to Week 16] The IBDQ is a 32-item instrument assessing health-related quality of life in inflammatory bowel disease (IBD) patients across four dimensions: bowel symptoms (10 items), systemic symptoms (5 items), emotional function (12 items), and social function (5 items). Each question evaluates experiences over the previous two weeks on a 7-point Likert scale from 1 (worst) to 7 (best). The total score ranges from 32 to 224, with higher scores indicating better quality of life. Both domain-specific and overall scores can be calculated. 7. Change from baseline in Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-F) score [Time Frame: From Baseline to Week 16] The FACIT-F questionnaire assesses fatigue associated with anemia through 13 fatigue-related questions. Each item is scored on a 5-point Likert scale (0="not at all" to 4="very much"), with total scores ranging from 0 to 52. High scores represent less fatigue. For CD patients, a 7-10 point improvement on the FACIT-F total score may represent meaningful improvements. 8. On-treatment serum concentrations of SAR442970 at predefined timepoints [Time Frame: Up to End of Study (approximately 164 weeks)] 9. Number and percentage of participants with any Treatment Emergent Adverse Events (TEAEs) during induction, maintenance and Long-term Extension (LTE) treatment period [Time Frame: Up to End of Study (approximately 164 weeks)] 10. Number and percentage of participants with any TEAEs during open-label treatment period [Time Frame: Up to Week 52] 11. Incidence of Anti-drug Antibodies (ADAs) over time [Time Frame: Up to End of Study (approximately 164 weeks)] 12. Percentage of participants who achieve endoscopic remission based on centrally read SES-CD at Week 52 [Time Frame: At Week 52] Refer to the secondary outcome-3 for "endoscopic remission". 13. Percentage of participants achieving CDAI clinical remission at Week 52 [Time Frame: At Week 52] CDAI clinical remission is defined as CDAI <150. 14. Percentage of participants achieving CDAI clinical remission at both Week 16 and at Week 52 [Time Frame: At Week 52] Refer to the secondary outcome-13 for "CDAI clinical remission". 15. Percentage of participants who achieve endoscopic response at Week 52 [Time Frame: At Week 52] Refer to the primary outcome-1 for "endoscopic response". 16. Percentage of participants who achieve endoscopic response at both Week 16 and Week 52 [Time Frame: At Week 52] Refer to the primary outcome-1 for "endoscopic response". 17. Percentage of participants who achieve CDAI clinical response at Week 52 [Time Frame: At Week 52] Refer to the secondary outcome-5 for "CDAI clinical response". 18. Percentage of participants who achieve both clinical remission based on CDAI score and endoscopic response based on SES- CD at Week 52 [Time Frame: At Week 52] Refer to the secondary outcome-4 for "clinical remission based on CDAI score and endoscopic response based on SES-CD".

Key inclusion & exclusion criteria

Age minimum	>= 18age old
Age maximum	<= 75age old
Gender	Both
Include criteria	- Diagnosis of Crohn's Disease (CD) for at least 3 months prior to screening. - Confirmed diagnosis of moderate-to-severe CD. - History of prior exposure to standard treatment (5-Amino Salicylates [5-ASAs], steroids, immunomodulators or antibiotics) or advanced therapies (ATs) (biologics or small molecules), but having inadequate response to, loss of response to or intolerance to at least one of these therapies. - On stable doses of standard treatments prior to screening (Oral 5-ASA compounds, Oral corticosteroids, Azathioprine [AZA], 6-Mercaptopurine [6-MP], Methotrexate [MTX], or Antibiotics, etc.). - Contraceptive use by men and women should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies.
Exclude criteria	- Participants with active Ulcerative Colitis (UC), indeterminate colitis, adenomatous colonic polyps not excised, colonic mucosal dysplasia (low- or high-grade dysplasia) or short bowel syndrome. - Participants with CD isolated to the stomach, duodenum, jejunum, or perianal region, without colonic or ileal involvement. - Participants with following ongoing known complications of CD: - - Any manifestation that might require bowel surgery while enrolled in the study. - - Participant with ostomy or ileoanal pouch. - - Participant diagnosed with conditions that could interfere with drug absorption including but not limited to short bowel syndrome. - - Participant with surgical bowel resection within the past three months prior to screening, or a history of >3 bowel resections. - History of any other condition which, in the opinion of the Investigator, would put the participant at risk by participation in the study. The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.