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Crohn's DiseasePhase 3ASCENSIONNCT04777656

Use of Crohn's Disease Exclusion Diet on Top of Standard Therapy Versus Standard Therapy Alone in Unstable Pediatric Crohn's Disease Patients.

A Phase 3 study testing Phase1 : CDED/Modulen™IBD® + Maintenance therapy and Phase2 and 3 : in people with Crohn's Disease, run by Assistance Publique - Hôpitaux de Paris at 4 sites in France.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

This research is a multicenter French randomized and single blinded phase III clinical trial evaluating two treatment strategies among Crohn's disease (CD) patients. The main objective is to assess if the addition of Crohn's Disease Exclusion Diet (CDED) to ongoing standard medication is superior to reduce the rate of… Read more about this study

Who is it for?
Ages 6 to 17 years
Conditions the study is for
Crohn's Disease
What is being tested?
Phase1 : CDED/Modulen™IBD® + Maintenance therapy and Phase2 and 3 :
Could I receive a placebo?
No, everyone receives an active treatment
How many people
120 participants
Where
4 sitesFrance
Study dates
26 Sep 2022to Nov 2026
Phase
Phase 3
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 6 to 17 years
  • All sexes
  • No healthy volunteers
  • Child

Who may be able to join

  • Child/Adolescent aged 6-17 years with a confirmed diagnosis of CD (for at least 3 months) with an active disease (defined as: wPCDAI >12.5 or CRP > 2 times upper limit or calprotectin levels >250µg/g if available) despite anti-inflammatory (5-ASA and derivates), corticosteroids, immunomodulator (thiopurines or methotrexate) and/or biologic therapy (anti-TNF, anti-integrin anti-IL23 antibodies)
  • For girls of childbearing age: a negative pregnancy test, and use of an effective method of contraception (abstinence, oral contraceptives, intra-uterine device, diaphragm with spermicide and condom)
  • Patient willing to comply with daily intake of an exclusion diet
  • Informed and signed consent of parents
  • Patient affiliated to social security (or health insurance)

Who cannot join

  • Active perianal fistulizing disease
  • Internal fistula or evidence of un-drained and un-controlled abscess/phlegmon
  • Patient who require CD-related surgical therapy
  • Patient with known allergy to cow milk's proteins
  • Patient incapable to follow CDED for a prolonged period
  • Pregnancy, breastfeeding
  • Patient already included in an interventional study

Trial locations and contacts

4 sites in 1 country. Contact the study team or a site near you to ask about taking part.

Franck Ruemmele, MD, PhD contact

+33 (0)1 44 49 25 16

frank.ruemmele@aphp.fr

Prissile Bakouboula, PhD contact

+33 (0)1 71 19 64 94

prissile.bakouboula@aphp.fr

France4 sites, 4 recruiting
  • Hôpital Femme mère enfant, CHU Lyon - Service Hépato-gastroentérologie et Nutrition pédiatrique

    Bron, 69677

    Rémi Duclaux-Loras, MD, PhD, +33-4-72-35-70-50, remi.duclaux-loras@chu-lyon.fr

    Recruiting
  • CHU Caen Normandie - Service de Gastroentérologie pédiatrique

    Caen, 14033

    Claire Dupont-Lucas, MD, PhD, +33-2-31-27-25-94, dupont-c@chu-caen.fr

    Recruiting
  • Hôpital de la Timone, AP-HM - Service de Gastroentérologie pédiatrique

    Marseille, 13385

    Céline Roman, MD, PhD, +33-4-91-38-83-83, celine.roman@ap-hm.fr

    Recruiting
  • Hôpital Necker-Enfants malades - Service de Gastroentérologie pédiatrique

    Paris, 75015

    Franck Ruemmele, MD, PhD, +33 (0)1 44 49 25 16, frank.ruemmele@aphp.fr

    Recruiting

Other trials in France

About this study

Official title: Randomized Trial for Unstable Pediatric Crohn's Disease Patients Comparing the Use of Crohn's Disease Exclusion Diet (CDED) on Top of Standard Therapy Versus Standard Therapy Alone.

This research is a multicenter French randomized and single blinded phase III clinical trial evaluating two treatment strategies among Crohn's disease (CD) patients. The main objective is to assess if the addition of Crohn's Disease Exclusion Diet (CDED) to ongoing standard medication is superior to reduce the rate of relapses over 12 months compared to standard medication alone in children/adolescents with unstable CD responding with remission after a 2-months course of CDED

Read the detailed description

Crohn's disease is a recurrent inflammatory disorder. Current treatment strategies aim reducing intestinal (and systemic) inflammation based on the use of Immunomodulators (IM) and biologics (B). However, some patients, particularly in the pediatric age group do not respond with remission to standard therapy and approximately 30% of patients lose response to efficient therapy. There is a clear unmet need for new treatment strategies. In addition, patients and families have a high degree of reluctance to use IM/B as life-long medication, particularly due to potential side effects including cancer, lymphomas, serious infections or drug-related immune diseases. This is of particular importance for children/adolescents with CD, potentially exposed over many decades to various IM/B. Experimental and epidemiological data indicate that the western life style and particularly modern food play a key role in the development of CD, probably via alteration of the intestinal barrier function and/or enforcing the intestinal dysbiosis. Based on these data and the observation that exclusive enteral nutrition is highly efficacious in inducing remission in active CD, nutritional therapies are more and more in the focus for the development of new treatment approaches.

The main objective is to assess if the addition of CDED to ongoing standard medication is superior to reduce the rate of relapses over 12 months compared to standard medication alone in children/adolescents with unstable CD responding with remission after a 2-months course of CDED.

To achieve this objective, eligible patients with active CD will participate to this study for a 13 months period. After a screening period, the patients will have a 2 months run-in phase where they will follow the CDED protocol, but continue their maintenance therapy, with the exception of corticosteroid that have to be tapered and stopped at the end of the 2 months.

Then, the patients responding to CDED during run-in will be randomized at M2 to one of the two treatment arms (CDED/Modulen™IBD® or Unrestricted food access) and will have 4 follow-up visits (M4, M6, M9 and M12)

Conditions
Crohn's Disease
Being tested
Phase1 : CDED/Modulen™IBD® + Maintenance therapy, Phase2 and 3 :
Keywords
Crohn's disease, Recurrent inflammatory disorder, Immunomodulators, Biologics, Exclusive Enteral Nutrition, Crohn's disease exclusion diet (CDED), Modulen™IBD®
Medical subject headings
Crohn Disease

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Phase1 : CDED/Modulen™IBD® + Maintenance therapyDietary supplement

    from D0 until M2: Phase 1 (2 months run-in phase with CDED protocol + maintenance therapy, with the exception of corticosteroid that have to be tapered and stopped until M2.)

  • Phase2 and 3 :Dietary supplement

    Also called CDED/Modulen™IBD® + Maintenance therapy

    from M2 until M4 CDED phase 2 (introduction of a selected number of additional food). From M4 until end of the study CDED phase 3 (enlargement of number of additional foods and allowance of some initially excluded foods).

Study groups in NCT04777656
Study groupRoleWhat they receive
CDED/Modulen™IBD®ExperimentalStrategy combining CD exclusion diet plus Modulen™IBD® on top of ongoing maintenance therapy.
Receives: Dietary Supplement: Phase1 : CDED/Modulen™IBD® + Maintenance therapy; Dietary Supplement: Phase2 and 3 :
Unrestricted food accessActive comparatorStop CDED and Modulen™IBD®, but continue maintenance therapy with unrestricted food access.
Receives: Dietary Supplement: Phase1 : CDED/Modulen™IBD® + Maintenance therapy
Not randomizedOtherPatient not in remission at M2 or refusing randomisation
Receives: Dietary Supplement: Phase1 : CDED/Modulen™IBD® + Maintenance therapy

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Relapse from randomization until M12

    Relapse is defined as weighted Paediatric Crohn's disease activity index (wPCDAI) >40 points and/or CRP >2 times over upper limit (in the absence of any obvious infections sign) or if at two consecutive visits (within 2-8 weeks) the wPCDAI is >12,5 but less 40 and/or CRP >1,5 but less 2 times over upper limit (in the absence of any obvious infections sign) or if the patient required additional CD-specific medication/surgery in the interval.

    Measured: 12 months

Secondary outcomes (22)
  1. Change of wPCDAI from baseline to M2

    Measured: 2 months

  2. Change of fecal calprotectin values from baseline to M2

    Measured: 2 months

  3. Clinical remission at M2

    Defined as wPCDAI ≤12.5 and normal CRP (≤1.5 fold upper normal range)

    Measured: 2 months

  4. Deep remission at M2

    Defined as wPCDAI ≤12.5 and normal CRP within normal lab range) and normal fecal calprotectin ((<250µg/g)

    Measured: 2 months

  5. Physician global assessment (PGA) from baseline to M2

    Crohn's Disease activity assessed as remission - weak - moderate - severe

    Measured: 2 months

  6. Mucosal healing at M2

    absence of any ulcerations (including aphthae)

    Measured: 2 months

  7. Endoscopic response at M2

    Decrease of Crohn's Disease Endoscopic Index Score (CDEIS) ≥ 50% from baseline

    Measured: 2 months

  8. Change of MRI from baseline to M2

    Simplified Magnetic Resonance Index of Activity (MARIA) for Crohn's Disease score from baseline to M2

    Measured: 2 months

  9. CDED tolerance rate at M2

    serious and non serious adverse events

    Measured: 2 months

  10. CDED compliance rate at M2

    Measured: 2 months

  11. Change of intestinal microbiome composition from baseline to M2

    Measured: 2 months

  12. Clinical remission

    Defined as wPCDAI ≤12.5 and normal CRP (≤1.5 fold upper normal range)

    Measured: At 4 months, 6 months, 9 months and 12 months

  13. Deep remission

    Defined as wPCDAI ≤12.5 and normal CRP (within normal lab range) and normal fecal calprotectin (<250µg/g)

    Measured: At 4 months, 6 months, 9 months and 12 months

  14. Relapse

    Defined as wPCDAI >40 points and/or CRP >2 times over upper limit (in the absence of any obvious infections sign) or if at two consecutive visits (within 2-8 weeks) the wPCDAI is >12,5 but less 40 and/or CRP >1,5 but less 2 times over upper limit (in the absence of any obvious infections sign) or if the patient required additional CD-specific medication/surgery in the interval

    Measured: At 4 months, 6 months, 9 months and 12 months

  15. Physician global assessment (PGA)

    Crohn's Disease activity assessed as remission - weak - moderate - severe

    Measured: At 4 months, 6 months, 9 months and 12 months

  16. Mucosal Healing at M12

    Absence of any ulcerations (including aphthae)

    Measured: 12 months

  17. Endoscopic response at M12

    Decrease of Crohn's Disease Endoscopic Index Score (CDEIS) ≥ 50% from baseline

    Measured: 12 months

  18. Change of MRI from M2 to M12

    Simplified Magnetic Resonance Index of Activity (MARIA) for Crohn's Disease score from M2 to M12

    Measured: 12 months

  19. CDED tolerance rate at M12

    Serious and non serious adverse events

    Measured: 12 months

  20. CDED compliance rate at M12

    Measured: 12 months

  21. Change of Intestinal microbiome composition

    Measured: At 4 months, 6 months, 9 months, 12 months

  22. Change of quality of life IMPACT-3 from inclusion until 12 months

    IMPACT-3 questionnaire of 35 closed questions - scale ranging from 1 to 5 for all answers - higher score suggesting better quality of life

    Measured: At baseline, 2 months, 4 months, 6 months, 9 months, 12 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted2 Mar 2021
  2. Study start26 Sep 2022
  3. Primary completionNov 2026 (estimated)
  4. Study completionNov 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Single blind
Who is masked
Outcomes assessor
Enrolment
120 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04777656
Sponsor's protocol ID
APHP200010
Other IDs
2020-A02569-30
Acronym
ASCENSION
Status last verified
Mar 2026
First submitted
26 Feb 2021
Last updated
27 Mar 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Ruemmele FM, Veres G, Kolho KL, Griffiths A, Levine A, Escher JC, Amil Dias J, Barabino A, Braegger CP, Bronsky J, Buderus S, Martin-de-Carpi J, De Ridder L, Fagerberg UL, Hugot JP, Kierkus J, Kolacek S, Koletzko S, Lionetti P, Miele E, Navas Lopez VM, Paerregaard A, Russell RK, Serban DE, Shaoul R, Van Rheenen P, Veereman G, Weiss B, Wilson D, Dignass A, Eliakim A, Winter H, Turner D; European Crohn's and Colitis Organisation; European Society of Pediatric Gastroenterology, Hepatology and Nutrition. Consensus guidelines of ECCO/ESPGHAN on the medical management of pediatric Crohn's disease. J Crohns Colitis. 2014 Oct;8(10):1179-207. doi: 10.1016/j.crohns.2014.04.005. Epub 2014 Jun 6.

    PubMed 24909831
  • Wynands J, Belbouab R, Candon S, Talbotec C, Mougenot JF, Chatenoud L, Schmitz J, Cezard JP, Goulet O, Hugot JP, Ruemmele FM. 12-month follow-up after successful infliximab therapy in pediatric crohn disease. J Pediatr Gastroenterol Nutr. 2008 Mar;46(3):293-8. doi: 10.1097/MPG.0b013e31815604cd.

    PubMed 18376247
  • Pigneur B, Lepage P, Mondot S, Schmitz J, Goulet O, Dore J, Ruemmele FM. Mucosal Healing and Bacterial Composition in Response to Enteral Nutrition Vs Steroid-based Induction Therapy-A Randomised Prospective Clinical Trial in Children With Crohn's Disease. J Crohns Colitis. 2019 Jul 25;13(7):846-855. doi: 10.1093/ecco-jcc/jjy207.

    PubMed 30541015
  • Levine A, Wine E, Assa A, Sigall Boneh R, Shaoul R, Kori M, Cohen S, Peleg S, Shamaly H, On A, Millman P, Abramas L, Ziv-Baran T, Grant S, Abitbol G, Dunn KA, Bielawski JP, Van Limbergen J. Crohn's Disease Exclusion Diet Plus Partial Enteral Nutrition Induces Sustained Remission in a Randomized Controlled Trial. Gastroenterology. 2019 Aug;157(2):440-450.e8. doi: 10.1053/j.gastro.2019.04.021. Epub 2019 Jun 4.

    PubMed 31170412
  • Levine A, Sigall Boneh R, Wine E. Evolving role of diet in the pathogenesis and treatment of inflammatory bowel diseases. Gut. 2018 Sep;67(9):1726-1738. doi: 10.1136/gutjnl-2017-315866. Epub 2018 May 18.

    PubMed 29777041

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Phase1 : CDED/Modulen™IBD® + Maintenance therapy and Phase2 and 3 : in people with Crohn's Disease, run by Assistance Publique - Hôpitaux de Paris at 4 sites in France.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 27 Mar 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 4 sites in France. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Franck Ruemmele, MD, PhD (+33 (0)1 44 49 25 16, frank.ruemmele@aphp.fr), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Relapse from randomization until M12 (time frame: 12 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT04777656, which also lists 5 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Mar 2026; AzTrials last refreshed its copy on 7 Nov 2026.

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