Evaluating the effects of efgartigimod PH20 SC in adults with systemic sclerosis
Official title: A Randomized, Double-Blinded, Placebo-Controlled, Phase 2, Parallel-Group Study to Evaluate the Efficacy, Safety, Tolerability, Pharmacodynamics, Pharmacokinetics, and Immunogenicity of Efgartigimod PH20 SC in Adult Participants With Systemic Sclerosis
Run by argenx · NCT06655155 · Data updated 2026-05-14
This study is no longer in our active list. It may have stopped recruiting or finished. The details below are as of 2026-05-14 and are kept for reference. Check ClinicalTrials.gov for its current status, or see similar studies below.
This study is testing a new drug called efgartigimod PH20 SC to see if it helps adults with systemic sclerosis feel better and improve their health over about 15 months.
Quick facts
| Phase | Phase 2 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 81 (estimated) |
| Sponsor | argenx Industry-sponsored |
| Locations | 74 sites (Phoenix, Arizona and 73 other locations) |
| Trial ID | NCT06655155 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults aged 18 and older with a confirmed diagnosis of diffuse or limited systemic sclerosis who meet specific clinical criteria.
✕Probably not a fit
Patients with isolated anticentromere antibodies 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 efficacy and safety of efgartigimod PH20 SC in adults diagnosed with systemic sclerosis (SSc). Participants will undergo a screening period followed by a treatment phase lasting up to 48 weeks, where they will be randomly assigned to receive either the active drug or a placebo. The study will also include a safety follow-up period, making the total duration approximately 15 months. The primary focus is on measuring the drug's impact on symptoms and overall health in individuals with SSc.
Why it matters
Potential benefit: If successful, this treatment could significantly improve the quality of life for patients suffering from systemic sclerosis.
How similar studies have gone: While this approach is being evaluated in this context, similar studies have shown promise in treating autoimmune conditions, suggesting potential for success.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Is aged ≥18 years and the local legal age of consent for clinical studies * Has diffuse or limited SSc diagnosis and fulfills the 2013 ACR/EULAR classification criteria * Has a positive antinuclear antibodies (ANA) test result at the central laboratory with titer of at least 1:160 * Has a Health Assessment Questionnaire-Disability Index (HAQ-DI) score of at least 0.5 OR a Patient Global Assessment (PGA) score of at least 3 * Has a modified Rodnan Skin Score (mRSS) score between 15 and 35 * The participant is anti-RNA polymerase III autoantibody negative at central laboratory and had the first non-Raynaud's phenomenon manifestation less than 5 years before screening or the participant is anti-RNA polymerase III autoantibody positive at central laboratory and had the first non-Raynaud's phenomenon manifestation less than 2 years before screening * Has uninvolved or mildly thickened skin area in at least 1 injection site Exclusion Criteria: * Isolated anticentromere antibodies (ACA) seropositivity at the central laboratory * Significant Pulmonary Arterial Hypertension * Severe digital vasculopathy within the past 3 months * Skin thickening due to scleroderma mimics or localized scleroderma * Scleroderma renal crisis within the past 6 months of participating to the study * Another rheumatic autoimmune disease, except for secondary Sjögren's syndrome or fibromyalgia
Where it's running
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Arizona Arthritis and Rheumatology Associates
Phoenix, Arizona, United States Recruiting -
UCLA Ronald Reagan University of California Los Angeles Medical Center
Los Angeles, California, United States Recruiting -
IRIS Research and Development LLC
Plantation, Florida, United States Recruiting -
University of Illinois Health Outpatient Care Center
Chicago, Illinois, United States Recruiting -
DelRicht Research, LLC
New Orleans, Louisiana, United States Recruiting -
Johns Hopkins Asthma and Allergy Center
Baltimore, Maryland, United States Recruiting
Show 44 more locations
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Thomas Jefferson University
Columbia, Maryland, United States Recruiting -
University of Michigan Hospital
Ann Arbor, Michigan, United States Recruiting -
Perelman Center for Advanced Medicine
Philadelphia, Pennsylvania, United States Recruiting -
Aprillus Asistencia e Investigacion
Buenos Aires, Argentina Recruiting -
Instituto de Investigación Clínica TyT
Buenos Aires, Argentina Recruiting -
Consultorios Médicos Dr. Doreski - Fundacion Respirar
Buenos Aires, Argentina Recruiting -
Hospital General de Agudos Dr. José María Ramos Mejia
Buenos Aires, Argentina Recruiting -
Sanatorio Allende S.A.
Córdoba, Argentina Recruiting -
Clínica Mayo de U.M.C.B. S.R.L
San Miguel de Tucumán, Argentina Recruiting -
Centro de Investigaciones Médicas Tucumán
San Miguel de Tucumán, Argentina Recruiting -
UZ Gent
Ghent, Belgium Recruiting -
UZ Brussel
Jette, Belgium Recruiting -
Medical Center Artmed OOD
Plovdiv, Bulgaria Recruiting -
Diagnostic Consultative Center Convex EOOD
Sofia, Bulgaria Recruiting -
BIOCINETIC Ltda
Santiago, Chile Recruiting -
Centro de Investigaciones Clinicas UC (CICUC)
Santiago, Chile Recruiting -
Centro de especialidades médicas Vanguardia
Temuco, Chile Recruiting -
Clinical Hospital Centre Osijek
Osijek, Croatia Recruiting -
University Hospital of Split
Split, Croatia Recruiting -
General Hospital Zadar
Zadar, Croatia Recruiting -
Revmatologicky Ustav
Prague, Czechia Recruiting -
Rigshospitalet
Copenhagen, Denmark Recruiting -
CHU de Bordeaux - Hôpital Pellegrin
Bordeaux, France Recruiting -
CHU de Lille - Hopital Claude Huriez
Lille, France Recruiting -
CHU de Strasbourg - Hôpital de Hautepierre
Marseille, France Recruiting -
CHU de Montpellier- Hôpital Saint Eloi
Montpellier, France Recruiting -
AP-HP - Hôpital Cochin - Port-Royal, site Cochin
Paris, France Recruiting -
Universitätsklinikum Schleswig-Holstein - Campus Lübeck
Lübeck, Germany Recruiting -
Mühlenkreiskliniken - Johannes Wesling Klinikum Minden
Minden, Germany Recruiting -
Universitätsklinikum Tübingen
Tübingen, Germany Recruiting -
Olympion General Clinic
Pátrai, Greece Recruiting -
University General Hospital of Patras
Pátrai, Greece Recruiting -
Euromedica Kianous Stavros
Thessaloniki, Greece Recruiting -
Pecsi Tudomanyegyetem, Klinika Kozpont, Bor, Nemikortani es Onkodermatologiai Klinika
Pécs, Hungary Recruiting -
Azienda Ospedaliera Universitaria Careggi
Florence, Italy Recruiting -
Ospedale San Raffaele S.r.l.
Milan, Italy Recruiting -
Azienda Ospedaliera Universitaria Luigi Vanvitelli
Naples, Italy Recruiting -
Fondazione Policlinico Universitario A. Gemelli IRCCS
Roma, Italy Recruiting -
Fondazione Policlinico Universitario Campus Bio-Medico
Roma, Italy Recruiting -
IRCCS Istituto Clinico Humanitas
Rozzano, Italy Recruiting -
Hospital of Lithuanian University of Health Sciences Kauno klinikos
Kaunas, Lithuania Recruiting -
Klaipeda Hospital, Affiliate of Klaipeda University Hospital
Klaipėda, Lithuania Recruiting -
Mediadvance Clinical S.A.P.I. de C.V.
Chihuahua City, Mexico Recruiting -
Centro Integral Reumatologia SA de CV
Guadalajara, Mexico Recruiting
+24 more sites. See ClinicalTrials.gov for the full list.
Study contacts
- Study coordinator: Sabine Coppieters, MD
- Email: clinicaltrials@argenx.com
- Phone: 857-350-4834
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Progressive Muscle Relaxation for Fatigue and Breathing in Systemic Sclerosis
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FT839 therapy for autoimmune diseases
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.