A Phase 2a/b Study of the Efficacy and Safety of Subcutaneous Amlitelimab in Adults With Nonresponsive Celiac Disease

Running, not enrolling · Phase 2 · Has a placebo group

Conditions studied: Coeliac Disease, Celiac Disease

In brief

This is a Phase 2a/b, randomized, double-blind, placebo-controlled, parallel-group, 6-arm study to evaluate the efficacy and safety of amlitelimab in adult participants with non-responsive celiac disease (NRCD) who are on a gluten free diet (GFD) with and without simulated inadvertent gluten exposure (SIGE). The primary purpose of this study is to demonstrate the efficacy of subcutaneous (SC) amlitelimab in male and female participants (aged 18 to 75 years, inclusive) with NRCD. The study will assess the effect of amlitelimab when compared to placebo on gluten induced changes in the intestinal mucosa as measured by the villous height to crypt depth (Vh:Cd) ratio. The effect of amlitelimab on participant-reported celiac signs and symptoms along with the safety, tolerability, and pharmacokinetics of amlitelimab will also be studied. Study details include: The study duration will be up to 48 weeks (including a 16-week safety follow-up period) with 10 visits for participants who opt not to enter the optional long-term extension. The study duration will be up to 172 weeks (including an 8-week safety follow-up period) with 22 visits for participants who enter the optional long-term extension. The double-blind placebo-controlled treatment duration will be up to 28 weeks.

Key facts

Study ID

NCT06557772

Run by

Sanofi

People needed

229

Starts

2024-08-29

Expected to finish

2029-04-10

Last updated by the study team

2026-02-25

Who can join

Age: 18 and older, up to 75. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Participants must be 18 to 75 years of age inclusive, at the time of signing the informed consent.
• Participants with physician-diagnosed celiac disease with documented history of biopsy-proven celiac disease confirmed by medical records or physician statement.
• Participants who have self-reported attempt to maintain a GFD (and confirmed via questionnaire) for at least 12 consecutive months and must be willing to maintain their current diet for the duration of study participation.
• Participants have an adequate comprehension of a GFD as assessed by the Investigator.
• Participants willing to undergo all assessments in the protocol, including 2 esophagogastroduodenoscopies with duodenal biopsies.
• Participants who completed CDSD with ≥ 75% compliance from screening until randomization.
• During screening, participants must have at least one gastrointestinal symptom (i.e., diarrhea, abdominal pain, bloating, or nausea) of moderate or greater severity, as measured by the CDSD Gastrointestinal Domain, on at least 3 days out of any consecutive 7-day period considered by the investigator to be related to gluten exposure (i.e., due to celiac disease). The symptom can vary, but severity must be moderate or greater on three or more days. Participants must meet symptom criteria to undergo baseline esophagogastroduodenoscopy (EGD).

You may not qualify if…

• Participants are excluded from the study if any of the following criteria apply:
• A diagnosis of any severe complication of celiac disease, such as refractory celiac disease type 1 (RCD I) requiring immune suppressive medication, or type 2 (RCD II), enteropathy associated T-cell lymphoma (EATL), ulcerative jejunitis, or recent (within 12 months of screening) GI perforation.
• Presence of other active inflammatory GI disorders, including but not limited to the following: inflammatory bowel disease, eosinophilic esophagitis, diverticulitis, helicobacter infection, gastroenteritis or colitis, and microscopic colitis (requiring treatment) in the 6 months before screening. A history of treated erosive esophagitis is not an exclusion. Abnormalities found during baseline EGD or biopsy that are consistent with an inflammatory GI disorder other than celiac disease are exclusionary.
• Presence of other systemic autoimmune diseases including scleroderma, psoriatic or rheumatoid arthritis, and lupus. Participants with thyroid disease that has been well-controlled for at least 6 months, prior to screening, and participants with well-controlled type 1 diabetes (glycosylated hemoglobin < 9 % and no hospitalization or emergency room visit in the last 12 months for hyperglycemia or hypoglycemia) can be included per investigator judgement.
• Known or suspected severe enteric infection (viral, bacterial, or parasitic) within 6 months before screening. Severe enteric infection is defined as requiring a visit to the emergency room, hospitalization, or treatment with antibiotics or anti-infectives due to infection. Non-enteric viral infections, either resolved or well-controlled are not exclusionary.
• Any active or chronic infection including helminthic infection requiring systemic treatment within 4 weeks prior to screening (1 week in the event of superficial skin infections).
• Known history of or suspected significant current immunosuppression or hyposplenism, including history of invasive opportunistic or invasive helminthic infections despite infection resolution or otherwise recurrent infections of abnormal frequency or prolonged duration.
• Any malignancies or history of malignancies prior to enrollment (except for non-melanoma skin cancer that has been excised and completely cured for more than 5 years prior to enrollment).
• History of solid organ or stem cell transplant.
• Ongoing use, or use in the 3 months before screening, of medications known to cause villus abnormalities (eg, mycophenolate mofetil, azathioprine, methotrexate, olmesartan (other angiotensin receptor blockers are allowed), CTLA4 inhibitors, and PD-1/PD-L1 inhibitors).
• Ongoing chronic use of non-steroidal anti-inflammatory drugs (NSAIDs) of more than 2 doses per week, except acetylsalicylic acid/aspirin ≤100 mg daily for prophylactic use.
• Any ongoing treatment with systemic immunosuppressants, systemic corticosteroids, or use of oral budesonide in the 12 weeks before screening.
• Ongoing use of over-the-counter digestive enzymes or supplements, other than lactase, including those for gluten digestion and oral pharmaceutical probiotic supplements. Probiotics in foods (e.g., yogurt) are permitted.
• Concurrent participation in any other clinical study, including non-interventional studies.
• Prior administration of investigational agents to treat celiac disease within 5 half-lives of any agent, or one year from any tolerogenic agent.
• The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.

Where it is running

• FOMAT Medical Research - inSite Digestive Health Care - Arcadia- Site Number : 8400052 — Arcadia, California, United States
• Om Research- Site Number : 8400001 — Lancaster, California, United States
• United Medical Doctors - Los Alamitos- Site Number : 8400014 — Los Alamitos, California, United States
• Om Research- Site Number : 8400010 — Oxnard, California, United States
• Advanced Research Institute - Denver- Site Number : 8400048 — Denver, Colorado, United States
• Wellness Clinical Research - Miami Lakes - 8181 Northwest 154th Street- Site Number : 8400040 — Miami Lakes, Florida, United States
• Center for Digestive Health- Site Number : 8400013 — Orlando, Florida, United States
• GCP Clinical Research- Site Number : 8400007 — Tampa, Florida, United States
• Treasure Valley Medical Research- Site Number : 8400006 — Boise, Idaho, United States
• Hutchinson Clinic- Site Number : 8400020 — Hutchinson, Kansas, United States
• University of Kansas Medical Center- Site Number : 8400041 — Kansas City, Kansas, United States
• Boston Specialists- Site Number : 8400051 — Boston, Massachusetts, United States
• Berkshire Medical Center- Site Number : 8400017 — Pittsfield, Massachusetts, United States
• Gastroenterology Associates of Western Michigan - Wyoming- Site Number : 8400004 — Wyoming, Michigan, United States
• Mayo Clinic in Rochester - Minnesota- Site Number : 8400049 — Rochester, Minnesota, United States
• Washington University- Site Number : 8400025 — St Louis, Missouri, United States
• Advanced Research Institute - Reno- Site Number : 8400036 — Reno, Nevada, United States
• Sanmora Bespoke Clinical Research Solutions- Site Number : 8400015 — East Orange, New Jersey, United States
• Allied Digestive Health - Middlesex Monmouth Gastroenterology- Site Number : 8400053 — Freehold, New Jersey, United States
• M3 Wake Research- Site Number : 8400008 — Raleigh, North Carolina, United States
• Thomas Jefferson University Hospital- Site Number : 8400056 — Philadelphia, Pennsylvania, United States
• Velocity Clinical Research - Providence- Site Number : 8400002 — East Greenwich, Rhode Island, United States
• M3 Wake Research - Chattanooga- Site Number : 8400012 — Chattanooga, Tennessee, United States
• Quality Medical Research- Site Number : 8400018 — Nashville, Tennessee, United States
• One of a Kind Clinical Research Center - Scottsdale- Site Number : 8400055 — Scottsdale, Arizona, United States

Full record on ClinicalTrials.gov

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