A Study to Assess the Long-term Safety and Efficacy of a Subcutaneous Formulation of Efgartigimod in Adults With Active Idiopathic Inflammatory Myopathy

Study Purpose

The purpose of this study is to measure the long-term safety and tolerability of efgartigimod PH20 SC in adult participants with IIM who previously participated in ARGX-113-2007. Secondary objectives include efficacy measures of efgartigimod PH20 SC in participants with IIM.

Recruitment Criteria

Accepts Healthy Volunteers

Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms

No
Study Type

An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes.


An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes.


Searching Both is inclusive of interventional and observational studies.

Interventional
Eligible Ages 18 Years and Over
Gender All
More Inclusion & Exclusion Criteria

Inclusion Criteria:

  • - Has completed trial ARGX-113-2007.
  • - Being capable of providing signed informed consent and complying with protocol requirements.
  • - Agrees to use contraceptive measures consistent with local regulations and women of childbearing potential must have a negative urine pregnancy test at baseline before receiving the investigational medicinal product.

Exclusion Criteria:

  • - Intention to have major surgery during the study period; or any other medical condition that has arisen since enrollment in study ARGX-113-2007, that in the investigator's opinion, would confound the results of the study or put the participant at undue risk.
  • - Known hypersensitivity reaction to investigational medicinal product or 1 of its excipients Development of any malignancy, either new or recurrent, other than basal cell carcinoma of the skin, regardless of relatedness.
  • - Permanent discontinuation of IMP in ARGX-113-2007, or met the permanent discontinuation criteria at the rollover visit.
  • - Diagnosis with a deselected subtype of myositis based on the analysis of the phase 2 stage data in ARGX-113-2007, unless the investigator determines that the participant is benefiting from IMP as defined by a score of "much better" or "moderately better" on the 'Clinical Global Impression of Change' and 'Patient Global.
- Impression of Change' assessments for at least 12 weeks, and that enrolling in the study is in the participant's best interest

Trial Details

Trial ID:

This trial id was obtained from ClinicalTrials.gov, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.

NCT05979441
Phase

Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans.

Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data.

Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs.

Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.

Phase 3
Lead Sponsor

The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.

argenx
Principal Investigator

The person who is responsible for the scientific and technical direction of the entire clinical study.

N/A
Principal Investigator Affiliation N/A
Agency Class

Category of organization(s) involved as sponsor (and collaborator) supporting the trial.

Industry
Overall Status Enrolling by invitation
Countries Argentina, Austria, Belgium, Bulgaria, Cyprus, Czechia, Denmark, France, Georgia, Germany, Greece, Italy, Japan, Lithuania, Netherlands, Peru, Poland, Portugal, Serbia, South Korea, Spain, Sweden, Taiwan, Thailand, United Kingdom, United States
Conditions

The disease, disorder, syndrome, illness, or injury that is being studied.

Myositis, Active Idiopathic Inflammatory Myopathy, Dermatomyositis, Polymyositis, Immune-Mediated Necrotizing Myopathy, Antisynthetase Syndrome
Study Website: View Trial Website
Arms & Interventions

Arms

Experimental: EFG PH20 SC

participants receiving efgartigimod PH20 SC on top of background treatment

Interventions

Biological: - EFG PH20 SC

Subcutaneous injection of efgartigimod coformulated with rHuPH20, a permeation enhancer

Contact a Trial Team

If you are interested in learning more about this trial, find the trial site nearest to your location and contact the site coordinator via email or phone. We also strongly recommend that you consult with your healthcare provider about the trials that may interest you and refer to our terms of service below.

Phoenix 5308655, Arizona 5551752

Status

Address

Neuromuscular Clinical and Research Center - Neurology

Phoenix 5308655, Arizona 5551752, 85028

Attune Health Research, Inc, Beverly Hills 5328041, California 5332921

Status

Address

Attune Health Research, Inc

Beverly Hills 5328041, California 5332921, 90039

Orange 5379513, California 5332921

Status

Address

UCI Health - ALS and Neuromuscular Center - Neurology

Orange 5379513, California 5332921, 92868

San Francisco 5391959, California 5332921

Status

Address

UCSF Health - ALS and Neurodegenerative Disease Center - Dermatology

San Francisco 5391959, California 5332921, 94143

Gainesville 4156404, Florida 4155751

Status

Address

UF Health - Rheumatology Medical Specialties Medical Plaza

Gainesville 4156404, Florida 4155751, 32610

Mayo Clinic - Florida - Neurology, Jacksonville 4160021, Florida 4155751

Status

Address

Mayo Clinic - Florida - Neurology

Jacksonville 4160021, Florida 4155751, 32224

Atlanta 4180439, Georgia 4197000

Status

Address

Emory Healthcare - Emory Clinic - Rheumatology

Atlanta 4180439, Georgia 4197000, 30322

Chicago 4887398, Illinois 4896861

Status

Address

Northwestern Medicine - Northwestern Memorial Hospital

Chicago 4887398, Illinois 4896861, 60611

Great Neck 5119218, New York 5128638

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Address

Northwell Health Physician Partners Rheumatology

Great Neck 5119218, New York 5128638, 11021

Oregon Health and Science University, Portland 5746545, Oregon 5744337

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Address

Oregon Health and Science University

Portland 5746545, Oregon 5744337, 97239

University of Pittsburgh Medical Center, Pittsburgh 5206379, Pennsylvania 6254927

Status

Address

University of Pittsburgh Medical Center

Pittsburgh 5206379, Pennsylvania 6254927, 15261

Austin 4671654, Texas 4736286

Status

Address

Austin Neuromuscular Center (National Neuromuscular Research Institute, PLLC)

Austin 4671654, Texas 4736286, 78759

Nerve And Muscle Center Of Texas, Houston 4699066, Texas 4736286

Status

Address

Nerve And Muscle Center Of Texas

Houston 4699066, Texas 4736286, 77030

International Sites

Centro Dermatologico Schejtman, San Miguel 7645166, Argentina

Status

Address

Centro Dermatologico Schejtman

San Miguel 7645166, , B1663GKT

Centro Medico Privado de Reumatologia, San Miguel de Tucumán 3836873, Argentina

Status

Address

Centro Medico Privado de Reumatologia

San Miguel de Tucumán 3836873, , 4000

Innsbruck 2775220, Austria

Status

Address

Tirol Kliniken - A.o. Landeskrankenhaus Innsbruck - Neurology

Innsbruck 2775220, , 6020

Ghent 2797656, Belgium

Status

Address

AZ Sint-Lucas - Campus Sint-Lucas - Neurology

Ghent 2797656, , 9000

Leuven 2792482, Belgium

Status

Address

Universitair Ziekenhuis Leuven Gasthuisberg Campus

Leuven 2792482, , 3000

Medical Centre Artmed, Plovdiv 728193, Bulgaria

Status

Address

Medical Centre Artmed

Plovdiv 728193, , 4002

Nicosia 146268, Cyprus

Status

Address

Cyprus Institute of Neurology and Genetics

Nicosia 146268, , 2371

Revmatologicky Ustav, Prague 3067696, Czechia

Status

Address

Revmatologicky Ustav

Prague 3067696, , 12850

Copenhagen 2618425, Denmark

Status

Address

Copenhagen University Hospital-Rigshospitalet University Hospital

Copenhagen 2618425, , 2100

Paris 2988507, France

Status

Address

Reference Center Neuro-Muscular Diseases - CHU Paris Group Hospitalier La Pitie Salpetriere-Charles Foix

Paris 2988507, , 75013

Aversi Clinic, Tbilisi 611717, Georgia

Status

Address

Aversi Clinic

Tbilisi 611717, , 0160

LLC MediClub Georgia, Tbilisi 611717, Georgia

Status

Address

LLC MediClub Georgia

Tbilisi 611717, , 0160

New Hospitals, Tbilisi 611717, Georgia

Status

Address

New Hospitals

Tbilisi 611717, , 0162

The First Medical Center, Tbilisi 611717, Georgia

Status

Address

The First Medical Center

Tbilisi 611717, , 0180

Berlin 2950159, Germany

Status

Address

Charite Universitaetsmedizin Berlin - Campus Charite Mitte (CCM) - Rheumatology

Berlin 2950159, , 10117

Universitatsmedizin Mannheim GmbH, Mannheim 2873891, Germany

Status

Address

Universitatsmedizin Mannheim GmbH

Mannheim 2873891, , 68167

Universitaetsklinikum Tuebingen (UKT), Tübingen 2820860, Germany

Status

Address

Universitaetsklinikum Tuebingen (UKT)

Tübingen 2820860, , 72076

Klinikum der Universitaet Ulm, Ulm 2820256, Germany

Status

Address

Klinikum der Universitaet Ulm

Ulm 2820256, , 89081

Athens 264371, Greece

Status

Address

National and Kapodistrian University of Athens - Eginition Hospital

Athens 264371, , 115 28

Athens 264371, Greece

Status

Address

ATTIKON University General Hospital - Neurology

Athens 264371, , 12462

Bari 3182351, Italy

Status

Address

Azienda Ospedaliero Universitaria Consorziale Policlinico

Bari 3182351, , 70124

Milan 3173435, Italy

Status

Address

Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) - Ospedale San Raffaele Hospital

Milan 3173435, , 20132

Pisa 3170647, Italy

Status

Address

Azienda Ospedaliero Universitaria Pisana - Ospedale Santa Chiara - Rheumatology

Pisa 3170647, , 56126

Roma 8957247, Italy

Status

Address

Fondazione Policlinico Universitario Agostino Gemelli - Neurology

Roma 8957247, , 168

The University of Tokyo Hospital, Bunkyō City 11790632, Japan

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Address

The University of Tokyo Hospital

Bunkyō City 11790632, , 113-8655

Santaros University Clinic, Vilnius 593116, Lithuania

Status

Address

Santaros University Clinic

Vilnius 593116, , 08410

Amsterdam UMC Research BV, Amsterdam 2759794, Netherlands

Status

Address

Amsterdam UMC Research BV

Amsterdam 2759794, , 1105 AZ

Arequipa 3947322, Peru

Status

Address

Clinica San Juan de Dios - sede Arequipa - Rheumatology

Arequipa 3947322, , 4000

Lima 3936456, Peru

Status

Address

Instituto Peruano Del Hueso Y La Articulacion Sac-Privado-Lima,Centro De Investigacion Iphar

Lima 3936456, , 27

Lodz 3093133, Poland

Status

Address

USK-WAM Centralny Szpital Weteranow - Szpital Kniniczny ul. Zeromskiego 113 - Rheumatology

Lodz 3093133, , 90-549

Szczecin 3083829, Poland

Status

Address

Centrum Wsparcia Badan Klinicznych Pomorskiego Uniwersytetu Medycznego w Szczecinie (CWBK PUM) - Rheumatology

Szczecin 3083829, , 71-252

Porto 2735943, Portugal

Status

Address

Centro Hospitalar do Porto - Hospital Santo Antonio

Porto 2735943, , 4099-001

Clinical Center of Serbia, Belgrade 792680, Serbia

Status

Address

Clinical Center of Serbia

Belgrade 792680, , 11000

Institute of Rheumatology, Belgrade 792680, Serbia

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Address

Institute of Rheumatology

Belgrade 792680, , 11000

Seoul National University Hospital, Seoul 1835848, South Korea

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Address

Seoul National University Hospital

Seoul 1835848, , 03080

Hospital Universitario 12 de Octubre, Madrid 3117735, Spain

Status

Address

Hospital Universitario 12 de Octubre

Madrid 3117735, , 28041

Valencia 2509954, Spain

Status

Address

Hospital Universitari i Politecnic La Fe de Valencia - Neurology

Valencia 2509954, , 46026

Karolinska Universitestssjukhus Solna, Solna 2675397, Sweden

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Address

Karolinska Universitestssjukhus Solna

Solna 2675397, , 17176

Chung Shan Medical University Hospital, Taichung 1668399, Taiwan

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Address

Chung Shan Medical University Hospital

Taichung 1668399, , 402

Bangkok 1609350, Thailand

Status

Address

King Chulalongkorn Memorial Hospital - Neurology

Bangkok 1609350, , 10330

Phramongkutklao Hospital, Bangkok 1609350, Thailand

Status

Address

Phramongkutklao Hospital

Bangkok 1609350, , 10400

Bangkok 1609350, Thailand

Status

Address

Siriraj Hospital, Mahidol University of Internal medicine

Bangkok 1609350, , 10700

Khon Kaen 1609776, Thailand

Status

Address

Faculty Of Medicine, Khon Kaen University

Khon Kaen 1609776, , 40002

The Royal Free Hospital, London 2643743, United Kingdom

Status

Address

The Royal Free Hospital

London 2643743, , NW3 2QG

Salford 2638671, United Kingdom

Status

Address

Northern Care Allicance NHS Foundation Trust - Salford Royal - Rheumatology

Salford 2638671, , M6 8HD