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Completed Phase 3 Interventional Results available

An Efficacy and Safety Study of ARGX-113 in Patients With Myasthenia Gravis Who Have Generalized Muscle Weakness

ClinicalTrials.gov ID: NCT03669588

Public ClinicalTrials.gov record NCT03669588. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Sep 1, 2026, 11:11 PM EDT

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

Official title

A Randomized, Double-Blind, Placebo-Controlled, Multicenter Phase 3 Trial to Evaluate the Efficacy, Safety and Tolerability of ARGX-113 in Patients With Myasthenia Gravis Having Generalized Muscle Weakness

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

A randomized, double-blind, placebo controlled, multicenter Phase 3 trial to evaluate the efficacy, safety, tolerability, quality of life and impact on normal daily activities of ARGX-113 in patients with gMG.

Study identification

NCT ID
NCT03669588
Recruitment status
Completed
Study type
Interventional
Phase
Phase 3
Lead sponsor
argenx
Industry
Enrollment
167 participants

Conditions and interventions

Interventions

Biological

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Aug 21, 2018
Primary completion
Apr 5, 2020
Completion
Apr 5, 2020
Last update posted
Feb 7, 2022

2018 – 2020

United States locations

U.S. sites
25
U.S. states
18
U.S. cities
24
Facility City State ZIP Site status
Investigator Site 29 Phoenix Arizona 85018
Investigator Site 66 Carlsbad California 92011
Investigator Site 5 Los Angeles California 90033
Investigator Site 49 Los Angeles California 90095
Investigator Site 18 Orange California 92868
Investigator Site 40 Palo Alto California 94304
Investigator Site 59 San Francisco California 94115
Investigator Site 58 Aurora Colorado 80045
Investigator Site 34 Jacksonville Florida 32209
Investigator Site 4 Tampa Florida 33612
Investigator Site 30 Springfield Illinois 62702
Investigator Site 25 Iowa City Iowa 52242
Investigator Site 21 Kansas City Kansas 66160
Investigator Site 27 Boston Massachusetts 02115
Investigator Site 48 Detroit Michigan 48201
Investigator Site 53 Buffalo New York 14202
Investigator Site 3 Chapel Hill North Carolina 27599
Investigator Site 20 Cleveland Ohio 44195
Investigator Site 9 Portland Oregon 97239
Investigator Site 17 Charleston South Carolina 29425
Investigator Site Cordova Tennessee 38018
Investigator Site 44 Houston Texas 77030
Investigator Site 6 San Antonio Texas 78229
Investigator Site 2 Charlottesville Virginia 22908
Investigator Site 16 Seattle Washington 98195

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 41 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT03669588, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Feb 7, 2022 · Synced Sep 1, 2026

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Open the official record

The complete protocol, eligibility criteria, and contact information for NCT03669588 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →