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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Sponsor: argenx Clear all
Active, not recruiting Phase 3 Interventional

A Phase 3 Study to Evaluate the Safety and Efficacy of Efgartigimod PH20 Subcutaneous in Adult Patients With Primary Immune Thrombocytopenia

NCT04812925
View directory record Official record
Conditions
Primary Immune Thrombocytopenia
Interventions
efgartigimod PH20 SC
Biological
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
173 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
5
States / cities
Bentonville, Arkansas • Washington D.C., District of Columbia • Fort Wayne, Indiana + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 11, 2026 · Synced Sep 1, 2026, 7:59 PM 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 12, 2025 · Synced Sep 1, 2026, 7:59 PM 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 28, 2025 · Synced Sep 1, 2026, 7:59 PM EDT
Completed Phase 3 Interventional

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

NCT04225156
View directory record Official record
Conditions
Primary Immune Thrombocytopenia
Interventions
efgartigimod
Biological
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
101 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
4
States / cities
Washington D.C., District of Columbia • Ocala, Florida • Iowa City, Iowa + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 15, 2026 · Synced Sep 1, 2026, 7:59 PM EDT
Completed Phase 3 Interventional Results available

Evaluating the Pharmacodynamic Noninferiority of Efgartigimod PH20 SC Administered Subcutaneously as Compared to Efgartigimod Administered Intravenously in Patients With Generalized Myasthenia Gravis

NCT04735432
View directory record Official record
Conditions
Generalized Myasthenia Gravis
Interventions
efgartigimod PH20 SC, efgartigimod IV
Biological
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
14
States / cities
Carlsbad, California • Orange, California • Boca Raton, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Feb 27, 2023 · Synced Sep 1, 2026, 7:59 PM EDT
Recruiting No phase listed Observational

A Non-interventional, Post-authorisation Safety Study of Patients Treated With Efgartigimod Alfa

NCT06298565
View directory record Official record
Conditions
Myasthenia Gravis
Interventions
efgartigimod
Biological
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
680 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2034
U.S. locations
17
States / cities
San Francisco, California • Boca Raton, Florida • Jacksonville Beach, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Feb 16, 2026 · Synced Sep 1, 2026, 7:59 PM 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 15, 2026 · Synced Sep 1, 2026, 7:59 PM EDT
Recruiting Phase 2Phase 3 Interventional

Evaluating the Pharmacokinetics, Pharmacodynamics, and Safety of Efgartigimod Administered Intravenously in Children With Generalized Myasthenia Gravis

NCT04833894
View directory record Official record
Conditions
Generalized Myasthenia Gravis
Interventions
Efgartigimod IV
Biological
Lead sponsor
argenx
Industry
Eligibility
2 Years to 18 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
3
States / cities
Chicago, Illinois • Chapel Hill, North Carolina • Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Sep 1, 2026, 7:59 PM 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
11
States / cities
Birmingham, Alabama • Rancho Mirage, California • Colorado Springs, Colorado + 7 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 1, 2026, 7:59 PM 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 Apr 30, 2026 · Synced Sep 1, 2026, 7:59 PM 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 5, 2026 · Synced Sep 1, 2026, 7:59 PM EDT
Active, not recruiting Phase 3 Interventional

A Study to Assess the Efficacy and Safety of Empasiprubart Versus IVIg in Adults With Multifocal Motor Neuropathy

NCT06742190
View directory record Official record
Conditions
Multifocal Motor Neuropathy (MMN), MMN
Interventions
Empasiprubart, IVIG (Intravenous Immunoglobulin), Empasiprubart-placebo, IVIg-placebo
Biological · Other
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
24
States / cities
Scottsdale, Arizona • Pomona, California • Rancho Mirage, California + 20 more
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced Sep 1, 2026, 7:59 PM EDT
Recruiting Phase 3 Interventional

A Study to Assess Efficacy and Safety of Efgartigimod PH20 SC PFS in Adult Participants With Graves' Disease

NCT07570316
View directory record Official record
Conditions
Graves' Disease, Graves Disease
Interventions
Efgartigimod PH20 SC, Placebo PH20 SC
Biological · Other
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
230 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
17
States / cities
Orange, California • Pasadena, California • Fleming Island, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 1, 2026, 7:59 PM EDT
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 29, 2025 · Synced Sep 1, 2026, 7:59 PM EDT
Withdrawn Phase 2 Interventional

Evaluating Efgartigimod in Patients With Guillain-Barré Syndrome

NCT05701189
View directory record Official record
Conditions
Guillain-Barre Syndrome
Interventions
Efgartigimod Alfa-Fcab, Intravenous Immunoglobulin (IVIg)
Drug
Lead sponsor
Chafic Karam
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 11, 2026 · Synced Sep 1, 2026, 7:59 PM EDT
Recruiting No phase listed Observational

ADAPT Forward - Master Protocol of a Platform Study to Evaluate the Safety and Efficacy of Multiple Regimens in Participants With Myasthenia Gravis

NCT07294170
View directory record Official record
Conditions
Myasthenia Gravis, MG, gMG, Generalized Myasthenia Gravis, Generalized Myasthenia Gravis (gMG), AChR-Ab Seropositive Generalized Myasthenia Gravis
Interventions
Efgartigimod IV, Empasiprubart IV, Placebo IV, Efgartigimod PH20 SC PFS
Biological · Other
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
12
States / cities
Carlsbad, California • Miami, Florida • Tampa, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 1, 2026, 7:59 PM 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 Sep 30, 2024 · Synced Sep 1, 2026, 7:59 PM 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 9, 2026 · Synced Sep 1, 2026, 7:59 PM EDT
Active, not recruiting Phase 1 Interventional

Cusatuzumab in Combination With Background Therapy for the Treatment of Participants With Acute Myeloid Leukemia

NCT04150887
View directory record Official record
Conditions
Leukemia, Myeloid, Acute
Interventions
Cusatuzumab, Azacitidine, Venetoclax
Drug
Lead sponsor
OncoVerity, Inc.
Industry
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
11
States / cities
Duarte, California • Louisville, Kentucky • Detroit, Michigan + 7 more
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced Sep 1, 2026, 7:59 PM 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 10, 2025 · Synced Sep 1, 2026, 7:59 PM EDT
Recruiting Phase 2 Interventional

ADAPT Forward 2 - ISA2 - a Study to Evaluate the Safety, Tolerability and Efficacy of Empasiprubart IV Monotherapy in Participants With AChR-Ab Seropositive Generalized Myasthenia Gravis

NCT07673627
View directory record Official record
Conditions
AChR-Ab Seropositive Generalized Myasthenia Gravis, Myasthenia Gravis (MG), MG - Myasthenia Gravis, gMG
Interventions
Empasiprubart IV, Placebo IV, Efgartigimod PH20 SC PFS
Biological · Other · Combination Product
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
3
States / cities
Miami, Florida • Amherst, New York • Chattanooga, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 1, 2026, 7:59 PM 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 1, 2026 · Synced Sep 1, 2026, 7:59 PM 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 24, 2026 · Synced Sep 1, 2026, 7:59 PM 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 Jul 20, 2026 · Synced Sep 1, 2026, 7:59 PM EDT