Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.

Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 17, 2026, 3:00 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 59 matching trials from the live ClinicalTrials.gov search.
Filters: Sponsor: argenx Clear all
Terminated Phase 3 Interventional Results available

A Study to Assess the Long-term Safety and Efficacy of a Subcutaneous Formulation of Efgartigimod PH20 SC in Adults With Pemphigus (Vulgaris or Foliaceus)

NCT04598477
View directory record Official record
Conditions
Pemphigus Vulgaris, Pemphigus Foliaceus
Interventions
efgartigimod PH20 SC, prednisone
Biological · Drug
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
183 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
17
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Redwood City, California + 13 more
Source: ClinicalTrials.gov public record
Updated Mar 30, 2025 · Synced Oct 17, 2026, 3:00 AM EDT
Recruiting No phase listed Observational

A Natural History Study in Participants With Congenital Myasthenic Syndromes (CMS) Due to Mutations in DOK7, MUSK, AGRN, or LRP4

NCT06078553
View directory record Official record
Conditions
Congenital Myasthenic Syndrome
Interventions
Not listed
Lead sponsor
argenx
Industry
Eligibility
2 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
7
States / cities
Sacramento, California • Chicago, Illinois • O'Fallon, Illinois + 4 more
Source: ClinicalTrials.gov public record
Updated Sep 25, 2026 · Synced Oct 17, 2026, 3:00 AM EDT
Active, not recruiting No phase listed Observational

A Prospective Longitudinal Study in Adults With Multifocal Motor Neuropathy

NCT05988073
View directory record Official record
Conditions
Multifocal Motor Neuropathy
Interventions
Not listed
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
413 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
25
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Orange, California + 21 more
Source: ClinicalTrials.gov public record
Updated May 29, 2026 · Synced Oct 17, 2026, 3:00 AM EDT
Recruiting Phase 4 Interventional

Treatment of Myasthenia Gravis Exacerbation or Crisis With Efgartigimod

NCT06860633
View directory record Official record
Conditions
Myasthenia Gravis Crisis, Myasthenia Gravis Exacerbations, AChR Myasthenia Gravis
Interventions
Efgartigimod
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 11, 2025 · Synced Oct 17, 2026, 3:00 AM EDT
Recruiting No phase listed Observational

A Worldwide Pregnancy Safety Study to Assess Maternal, Fetal, and Infant Outcomes Following Exposure to Efgartigimod During Pregnancy and/or Breastfeeding.

NCT06299748
View directory record Official record
Conditions
Myasthenia Gravis, CIDP - Chronic Inflammatory Demyelinating Polyneuropathy
Interventions
Efgartigimod
Biological
Lead sponsor
argenx
Industry
Eligibility
Female only
Enrollment
279 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2033
U.S. locations
1
States / cities
Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Oct 17, 2026, 3:00 AM EDT
Completed Phase 3 Interventional Results available

A Study to Assess the Efficacy and Safety of Efgartigimod in Adult Patients With Primary Immune Thrombocytopenia (ITP).

NCT04188379
View directory record Official record
Conditions
Primary Immune Thrombocytopenia
Interventions
efgartigimod, Placebo
Biological · Other
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
131 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
9
States / cities
Tucson, Arizona • Washington D.C., District of Columbia • Jacksonville, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Mar 13, 2025 · Synced Oct 17, 2026, 3:00 AM EDT
Active, not recruiting Phase 3 Interventional

A Study to Assess Efficacy and Safety of Efgartigimod PH20 SC in Adults With Ocular Myasthenia Gravis

NCT06558279
View directory record Official record
Conditions
Myasthenia Gravis, Ocular
Interventions
Efgartigimod PH20 SC, Placebo PH20 SC
Combination Product · Other
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
141 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
20
States / cities
Scottsdale, Arizona • Loma Linda, California • Los Angeles, California + 16 more
Source: ClinicalTrials.gov public record
Updated Jul 2, 2026 · Synced Oct 17, 2026, 3:00 AM EDT
Recruiting Phase 2 Interventional

Efgartigimod for the Treatment of Acute Optic Neuritis

NCT06453694
View directory record Official record
Conditions
Optic Neuritis
Interventions
Efgartigimod Alfa, Placebo
Drug
Lead sponsor
Anastasia Vishnevetsky, MD, MPH
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 10, 2025 · Synced Oct 17, 2026, 3:00 AM EDT
Recruiting Phase 3 Interventional

A Study to Assess the Efficacy and Safety of Empasiprubart in Adults With CIDP

NCT07091630
View directory record Official record
Conditions
Chronic Inflammatory Demyelinating Polyneuropathy, CIDP, Chronic Inflammatory Demyelinating Polyradiculoneuropathy
Interventions
Empasiprubart IV, Placebo IV
Biological · Other
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2031
U.S. locations
13
States / cities
Birmingham, Alabama • Rancho Mirage, California • Colorado Springs, Colorado + 9 more
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 17, 2026, 3:00 AM EDT
Active, not recruiting Phase 2 Interventional

A Study to Assess the Efficacy and Safety of Efgartigimod PH20 SC in Adults With Systemic Sclerosis

NCT06655155
View directory record Official record
Conditions
Systemic Sclerosis (SSc)
Interventions
Efgartigimod PH20 SC, Placebo PH20 SC
Combination Product · Other
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
87 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
9
States / cities
Phoenix, Arizona • Los Angeles, California • Plantation, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 17, 2026, 3:00 AM EDT
Completed Phase 4 Interventional

A Study to Assess Adults With CIDP Transitioning From IVIg to Efgartigimod PH20 SC

NCT06637072
View directory record Official record
Conditions
Chronic Inflammatory Demyelinating Polyneuropathy
Interventions
Efgartigimod PH20 SC
Biological
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
13
States / cities
Washington D.C., District of Columbia • Maitland, Florida • Miami, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Apr 6, 2026 · Synced Oct 17, 2026, 3:00 AM EDT
Active, not recruiting Phase 2 Interventional

A Study to Assess the Long-term Safety and Efficacy of a Subcutaneous Formulation of Efgartigimod in Adults With Chronic Inflammatory Demyelinating Polyneuropathy (CIDP, an Autoimmune Disorder That Affects the Peripheral Nerves)

NCT04280718
View directory record Official record
Conditions
Chronic Inflammatory Demyelinating Polyneuropathy (CIDP)
Interventions
Efgartigimod PH20 SC
Biological
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
229 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
25
States / cities
Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 21 more
Source: ClinicalTrials.gov public record
Updated Jun 29, 2025 · Synced Oct 17, 2026, 3:00 AM EDT
Active, not recruiting Phase 2 Interventional

A Study to Evaluate the Safety and Tolerability of Efgartigimod PH20 SC Given by Prefilled Syringe in Kidney Transplant Recipients With Antibody-Mediated Rejection (AMR)

NCT06503731
View directory record Official record
Conditions
Antibody-mediated Rejection
Interventions
Efgartigimod PH20 SC - prefilled syringe, Placebo PH20 SC - prefilled syringe
Combination Product · Other
Lead sponsor
argenx
Industry
Eligibility
18 Years to 80 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
8
States / cities
Birmingham, Alabama • Los Angeles, California • Chicago, Illinois + 5 more
Source: ClinicalTrials.gov public record
Updated Jul 2, 2026 · Synced Oct 17, 2026, 3:00 AM EDT
Recruiting Phase 3 Interventional

A Study to Assess Efficacy and Safety of Empasiprubart Versus IVIg in Adults With CIDP

NCT06920004
View directory record Official record
Conditions
Chronic Inflammatory Demyelinating Polyneuropathy, CIDP, CIDP - Chronic Inflammatory Demyelinating Polyneuropathy
Interventions
empasiprubart, IVIg, empasiprubart-placebo, IVIg-placebo
Biological · Other
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
218 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
16
States / cities
Birmingham, Alabama • Rancho Mirage, California • Colorado Springs, Colorado + 12 more
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 17, 2026, 3:00 AM EDT
Active, not recruiting Phase 3 Interventional Results available

A Phase 3 Study to Evaluate the Efficacy and Safety of Efgartigimod IV in Patients With Acetylcholine Receptor Binding Antibody Seronegative Generalized Myasthenia Gravis

NCT06298552
View directory record Official record
Conditions
Generalized Myasthenia Gravis, gMG, Myasthenia Gravis, Generalized, Myasthenia Gravis
Interventions
Efgartigimod IV, Placebo IV
Biological · Other
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
119 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
19
States / cities
Scottsdale, Arizona • Fresno, California • Boca Raton, Florida + 15 more
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Oct 17, 2026, 3:00 AM EDT
Recruiting Phase 2 Interventional

ADAPT Forward 1 - ISA1 - a Study to Evaluate Empasiprubart IV as add-on Therapy to Efgartigimod IV in Participants With AChR-Ab Seropositive Generalized Myasthenia Gravis With a Partial Clinical Response to Efgartigimod

NCT07284420
View directory record Official record
Conditions
AChR-Ab Seropositive Generalized Myasthenia Gravis, Myasthenia Gravis, MG, gMG, Generalized Myasthenia Gravis, Generalized Myasthenia Gravis (gMG)
Interventions
Efgartigimod IV, Empasiprubart IV
Biological
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
14
States / cities
Carlsbad, California • Miami, Florida • Tampa, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2026 · Synced Oct 17, 2026, 3:00 AM EDT
Terminated Phase 3 Interventional Results available

A Phase 3 Study to Evaluate the Long-term Safety, Tolerability and Efficacy of Efgartigimod PH20 SC in Adult Participants With Bullous Pemphigoid

NCT05681481
View directory record Official record
Conditions
Bullous Pemphigoid
Interventions
efgartigimod PH20 SC, Prednisone
Biological · Drug
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
6
States / cities
Phoenix, Arizona • Fountain Valley, California • Miami, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Feb 25, 2026 · Synced Oct 17, 2026, 3:00 AM EDT
Enrolling by invitation Phase 3 Interventional

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

NCT05979441
View directory record Official record
Conditions
Myositis, Active Idiopathic Inflammatory Myopathy, Dermatomyositis, Polymyositis, Immune-Mediated Necrotizing Myopathy, Antisynthetase Syndrome
Interventions
Efgartigimod PH20 SC
Biological
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
18
States / cities
Phoenix, Arizona • Beverly Hills, California • Orange, California + 15 more
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 17, 2026, 3:00 AM EDT
Completed Phase 3 Interventional Results available

A Study to Assess the Efficacy and Safety of a Subcutaneous Formulation of Efgartigimod PH20 SC in Adults With Pemphigus (Vulgaris or Foliaceus)

NCT04598451
View directory record Official record
Conditions
Pemphigus Vulgaris, Pemphigus Foliaceus
Interventions
efgartigimod PH20 SC, Placebo, prednisone
Biological · Other · Drug
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
222 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
21
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Redwood City, California + 16 more
Source: ClinicalTrials.gov public record
Updated Oct 1, 2024 · Synced Oct 17, 2026, 3:00 AM EDT
Completed Phase 2 Interventional Results available

A Study to Evaluate the Safety, Efficacy, and Pharmacokinetics of ARGX-113 in Patients With Myasthenia Gravis Who Have Generalized Muscle Weakness

NCT02965573
View directory record Official record
Conditions
Myasthenia Gravis
Interventions
ARGX-113, Placebo
Biological · Drug
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
6
States / cities
Irvine, California • Los Angeles, California • Tampa, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 28, 2024 · Synced Oct 17, 2026, 3:00 AM EDT
Active, not recruiting Phase 3 Interventional

A Study of the Efficacy and Safety of Efgartigimod in Patients With Primary Sjögren's Syndrome

NCT06684847
View directory record Official record
Conditions
Primary Sjogrens Disease
Interventions
Efgartigimod PH20 SC, Placebo PH20 SC
Biological · Other
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
631 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
42
States / cities
Scottsdale, Arizona • Sun City, Arizona • Tucson, Arizona + 36 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Oct 17, 2026, 3:00 AM EDT
Recruiting No phase listed Observational

Real-World Efgartigimod Effectiveness in CIDP: A Prospective Study

NCT07264426
View directory record Official record
Conditions
Chronic Inflammatory Demyelinating Polyradiculoneuropathy, CIDP, CIDP (Chronic Inflammatory Demyelinating Polyradiculoneuropathy)
Interventions
Efgartigimod PH20 SC
Biological
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Wilmington, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Oct 17, 2026, 3:00 AM EDT
Terminated Phase 2 Interventional Results available

Open Label Extension of Efgartigimod in Adults With Post-COVID-19 POTS

NCT05918978
View directory record Official record
Conditions
Post-COVID Postural Orthostatic Tachycardia Syndrome Postural Orthostatic Tachycardia Syndrome
Interventions
Efgartigimod
Drug
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
9
States / cities
La Jolla, California • Palo Alto, California • Glenview, Illinois + 6 more
Source: ClinicalTrials.gov public record
Updated Oct 23, 2025 · Synced Oct 17, 2026, 3:00 AM EDT
Recruiting Phase 3 Interventional

A Study to Assess the Efficacy and Safety of Efgartigimod IV in Adult Participants With Primary Immune Thrombocytopenia

NCT06544499
View directory record Official record
Conditions
Primary Immune Thrombocytopenia (ITP)
Interventions
Efgartigimod IV, Placebo IV
Biological · Other
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
18
States / cities
Phoenix, Arizona • Los Angeles, California • Oceanside, California + 15 more
Source: ClinicalTrials.gov public record
Updated May 1, 2026 · Synced Oct 17, 2026, 3:00 AM EDT