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, Korea, Republic of, Lithuania, Peru, Poland, 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, Arizona

Status

Address

Neuromuscular Clinical and Research Center - Neurology

Phoenix, Arizona, 85028

Attune Health Research, Inc, Beverly Hills, California

Status

Address

Attune Health Research, Inc

Beverly Hills, California, 90039

Orange, California

Status

Address

UCI Health - ALS and Neuromuscular Center - Neurology

Orange, California, 92868

San Francisco, California

Status

Address

UCSF Health - ALS and Neurodegenerative Disease Center - Dermatology

San Francisco, California, 94143

Gainesville, Florida

Status

Address

UF Health - Rheumatology Medical Specialties Medical Plaza

Gainesville, Florida, 32610

Mayo Clinic - Florida - Neurology, Jacksonville, Florida

Status

Address

Mayo Clinic - Florida - Neurology

Jacksonville, Florida, 32224

Atlanta, Georgia

Status

Address

Emory Healthcare - Emory Clinic - Rheumatology

Atlanta, Georgia, 30322

Chicago, Illinois

Status

Address

Northwestern Medicine - Northwestern Memorial Hospital

Chicago, Illinois, 60611

University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania

Status

Address

University of Pittsburgh Medical Center

Pittsburgh, Pennsylvania, 15261

Austin, Texas

Status

Address

Austin Neuromuscular Center (National Neuromuscular Research Institute, PLLC)

Austin, Texas, 78759

Nerve And Muscle Center Of Texas, Houston, Texas

Status

Address

Nerve And Muscle Center Of Texas

Houston, Texas, 77030

International Sites

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

Status

Address

Centro Medico Privado de Reumatologia

San Miguel De Tucumán, , 4000

Centro Dermatologico Schejtman, San Miguel, Argentina

Status

Address

Centro Dermatologico Schejtman

San Miguel, , B1663GKT

Innsbruck, Austria

Status

Address

Tirol Kliniken - A.o. Landeskrankenhaus Innsbruck - Neurology

Innsbruck, , 6020

Gent, Belgium

Status

Address

AZ Sint-Lucas - Campus Sint-Lucas - Neurology

Gent, , 9000

Leuven, Belgium

Status

Address

Universitair Ziekenhuis Leuven Gasthuisberg Campus

Leuven, , 3000

Medical Centre Artmed, Plovdiv, Bulgaria

Status

Address

Medical Centre Artmed

Plovdiv, , 4002

Nicosia, Cyprus

Status

Address

Cyprus Institute of Neurology and Genetics

Nicosia, , 2371

Revmatologicky Ustav, Praha, Czechia

Status

Address

Revmatologicky Ustav

Praha, , 12850

Copenhagen, Denmark

Status

Address

Copenhagen University Hospital-Rigshospitalet University Hospital

Copenhagen, , 2100

Paris, France

Status

Address

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

Paris, , 75013

Aversi Clinic, Tbilisi, Georgia

Status

Address

Aversi Clinic

Tbilisi, , 0160

LLC MediClub Georgia, Tbilisi, Georgia

Status

Address

LLC MediClub Georgia

Tbilisi, , 0160

New Hospitals, Tbilisi, Georgia

Status

Address

New Hospitals

Tbilisi, , 0162

The First Medical Center, Tbilisi, Georgia

Status

Address

The First Medical Center

Tbilisi, , 0180

Berlin, Germany

Status

Address

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

Berlin, , 10117

Universitaetsklinikum Tuebingen (UKT), Tuebingen, Germany

Status

Address

Universitaetsklinikum Tuebingen (UKT)

Tuebingen, , 72076

Athens, Greece

Status

Address

National and Kapodistrian University of Athens - Eginition Hospital

Athens, , 115 28

Athens, Greece

Status

Address

ATTIKON University General Hospital - Neurology

Athens, , 12462

Milan, Italy

Status

Address

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

Milan, , 20132

Pisa, Italy

Status

Address

Azienda Ospedaliero Universitaria Pisana - Ospedale Santa Chiara - Rheumatology

Pisa, , 56126

Roma, Italy

Status

Address

Fondazione Policlinico Universitario Agostino Gemelli - Neurology

Roma, , 168

Seoul National University Hospital, Seoul, Korea, Republic of

Status

Address

Seoul National University Hospital

Seoul, , 03080

Santaros University Clinic, Vilnius, Lithuania

Status

Address

Santaros University Clinic

Vilnius, , 08410

Arequipa, Peru

Status

Address

Clinica San Juan de Dios - sede Arequipa - Rheumatology

Arequipa, , 4000

Szczecin, Poland

Status

Address

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

Szczecin, , 71-252

Łódź, Poland

Status

Address

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

Łódź, , 90-549

Valencia, Spain

Status

Address

Hospital Universitari i Politecnic La Fe de Valencia - Neurology

Valencia, , 46026

Karolinska Universitestssjukhus Solna, Solna, Sweden

Status

Address

Karolinska Universitestssjukhus Solna

Solna, , 17176

Chung Shan Medical University Hospital, Taichung City, Taiwan

Status

Address

Chung Shan Medical University Hospital

Taichung City, , 402

Bangkok, Thailand

Status

Address

King Chulalongkorn Memorial Hospital - Neurology

Bangkok, , 10330

Phramongkutklao Hospital, Bangkok, Thailand

Status

Address

Phramongkutklao Hospital

Bangkok, , 10400

Khon Kaen, Thailand

Status

Address

Faculty Of Medicine, Khon Kaen University

Khon Kaen, , 40002

Salford, United Kingdom

Status

Address

Northern Care Allicance NHS Foundation Trust - Salford Royal - Rheumatology

Salford, , M6 8HD