Clinical trial Recruiting at 43 sites Phase 2 Interventional Ages 18 and up

Evaluating Itacitinib for treating adults with systemic sclerosis

Official title: Safety and Efficacy of Itacitinib in Adults With Systemic Sclerosis: a Phase II, Randomized, Controlled Trial

Run by Assistance Publique - Hôpitaux de Paris · NCT04789850 · Data updated 2026-11-12

This study is testing if a new medication called itacitinib can help adults with systemic sclerosis feel better and reduce skin thickening.

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment74 (estimated)
SponsorAssistance Publique - Hôpitaux de Paris
Academic / other
Drugs / interventionsrituximab, tocilizumab, itacitinib, methotrexate, cyclophosphamide
Locations46 sites (Amiens and 45 other locations)
StatusRecruiting
StartedFebruary 2, 2023
Main results expectedFebruary 2026
Study endsFebruary 2026
Registry record updatedNovember 20, 2025
Trial IDNCT04789850 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include adults aged 18 and older with a diagnosis of diffuse systemic sclerosis and specific disease activity criteria.

Probably not a fit

Patients with limited systemic sclerosis or those with a disease duration exceeding 36 months may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study aims to assess the safety and efficacy of itacitinib, a Janus kinase inhibitor, in adults diagnosed with systemic sclerosis (SSc). SSc is a severe autoimmune disease characterized by skin fibrosis and potential visceral involvement, leading to significant disability and poor quality of life. The trial will involve adult participants with diffuse SSc and will measure the impact of itacitinib on disease activity and skin fibrosis. Participants will be randomly assigned to receive either itacitinib or a placebo over a specified duration.

Why it matters

Potential benefit: If successful, this treatment could significantly improve the quality of life and disease outcomes for patients with systemic sclerosis.

How similar studies have gone: Previous studies have indicated the involvement of the JAK-STAT pathway in systemic sclerosis, suggesting potential for success with this approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adult patient (≥18 years old)
* Patient with a diagnosis of diffuse SSc, as defined by the American College of Rheumatology / EULAR 2013 criteria,
* Patient with a diffuse SSc, according to Leroy and Medsger dichotomy
* Patient with a SSc disease duration of less than 36 months (defined as time from first non-Raynaud phenomenon manifestation) or with an active SSc disease, as defined by EUSTAR disease activity score,
* Patient with a modified Rodnan skin score (mRSS) ≥ 10 and ≤ 35 units at screening,
* Negative pregnancy test for woman of childbearing potential, woman of childbearing potential should have reliable contraception for the 12 months' duration of the study,
* Patient able to give written informed consent prior to participation in the study,
* Affiliation to a social security scheme (profit or being entitled)
* If patients receive mycophenolate or methotrexate for SSc, these need to be on stable dose as follows:

  * Mycophenolate mofetil/sodium: stable dose for at least 2 months prior to randomisation
  * Methotrexate: stable dose and route of administration for at least 2 months prior to randomisation

Exclusion Criteria:

* Previous treatment with itacitinib or a Janus kinase (JAK) inhibitor,
* Contra-indications to itacitinib or Janus kinase inhibitor,
* Failure to sign the informed consent or unable to consent
* Patient participating in another investigational therapeutic study,
* Acute or chronic active infections, including HBV, HCV, HIV,
* Patient with other uncontrolled diseases, including drug or alcohol abuse, severe psychiatric diseases, that could interfere with participation in the trial according to the protocol,
* Patient suspected not to be observant to the proposed treatments,
* Patient who have white blood cell count ≤ 4,000/mm3,
* Patient who have platelet count ≤ 100,000/mm3,
* Patients who have ALT or AST level greater that 3 times the upper limit of normal,
* Patient who have triglyceride level greater than 5g/L
* Pregnant or breastfeeding woman,
* Protected adults (including individual under guardianship by court order),
* Patient receiving or having received cyclophosphamide or rituximab within the last three months (possible inclusion beyond 3 months),
* Patient receiving or having received a biotherapy (anti-TNF, abatacept or tocilizumab) in the last 3 months (possible inclusion beyond 3 months)
* Patient with Systemic Lupus, or Sjögren's syndrome with systemic manifestations justifying immunosuppressive therapy
* Atherosclerotic cardiovascular disease as defined by a history of myocardial infarction, ischaemic stroke, or peripheral artery thrombosis
* Anti-phospholipid syndrome

Where it's running

  • CH Amiens
    Amiens, France
    Recruiting
  • CHU Angers
    Angers, France
    Recruiting
  • CHU Annecy
    Annecy, France
    Recruiting
  • CHU Besançon
    Besançon, France
    Recruiting
  • Avicenne Hospital
    Bobigny, France
    Recruiting
  • CHU Bordeaux
    Bordeaux, France
    Recruiting
Show 40 more locations
  • CHU Bordeaux
    Bordeaux, France
    Recruiting
  • Ambroise Paré hospital
    Boulogne-Billancourt, France
    Recruiting
  • Hôpital de la Cavale Blanche
    Brest, France
    Recruiting
  • CHU Caen
    Caen, France
    Recruiting
  • CHU Gabriel Montpied
    Clermont-Ferrand, France
    Recruiting
  • Henry Mondor hospital
    Créteil, France
    Recruiting
  • CH Dax-Côte d'ARgent
    Dax, France
    Recruiting
  • CHU Dijon
    Dijon, France
    Recruiting
  • CHU Grenoble
    Grenoble, France
    Recruiting
  • CHU Grenoble
    Grenoble, France
    Recruiting
  • CH Le Mans
    Le Mans, France
    Recruiting
  • CHU Lille
    Lille, France
    Recruiting
  • CHU Limoges
    Limoges, France
    Recruiting
  • CHU Lyon sud
    Lyon, France
    Recruiting
  • Hôpital Nord
    Marseille, France
    Recruiting
  • La Timone Hospital
    Marseille, France
    Recruiting
  • La Timone Hospital
    Marseille, France
    Recruiting
  • Robert Schuman Hospital
    Metz, France
    Recruiting
  • CHU Montpellier - rhumatology
    Montpellier, France
    Recruiting
  • CHU Montpellier - St Eloi Hospital
    Montpellier, France
    Recruiting
  • CHU Nancy
    Nancy, France
    Recruiting
  • CHU Nantes
    Nantes, France
    Recruiting
  • Hopital L'Archet 1
    Nice, France
    Recruiting
  • Hospital Pasteur - CHU Nice
    Nice, France
    Recruiting
  • La Pitié-Salpêtrière
    Paris, France
    Recruiting
  • La Pitié-Salpêtrière
    Paris, France
    Recruiting
  • Cochin Hospital
    Paris, France
    Recruiting
  • CHU Poitiers
    Poitiers, France
    Recruiting
  • CH de Cornouaille
    Quimper, France
    Recruiting
  • Robert Debré Hospital
    Reims, France
    Recruiting
  • Hôpital Sud
    Rennes, France
    Recruiting
  • CHU Saint Etienne
    Saint-Etienne, France
    Recruiting
  • Nouvel Hospital Civil
    Strasbourg, France
    Recruiting
  • Rangueil Hospital
    Toulouse, France
    Recruiting
  • CHU Tours
    Tours, France
    Recruiting
  • CH Valenciennes
    Valenciennes, France
    Recruiting
  • Hôpitaux de Barbois
    Vandœuvre-lès-Nancy, France
    Recruiting
  • Saint Antoine Hospital
    Paris, France
    Not yet recruiting
  • Hospital Croix St Simon
    Paris, France
    Not yet recruiting
  • CHU Rouen
    Rouen, France
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.