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A Study to Assess the Safety of ARGX-213 in Healthy Volunteers

A Phase 1, Randomized, Double-Blinded, Placebo-Controlled Study to Investigate the Safety, Tolerability, Pharmacokinetics, Pharmacodynamics, and Immunogenicity of Single and Multiple Ascending Doses of ARGX-213 in Healthy Adult Participants

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06968338
Enrollment
88
Registered
2025-05-13
Start date
2025-04-11
Completion date
2026-03-20
Last updated
2026-04-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy Volunteers

Brief summary

This study aims to assess the safety of ARGX-213 in healthy adults. Another aim is to measure the amount of ARGX-213 in the blood over time to learn how it moves through the body and acts in the body. The participants will remain in the study for approximately up to 21 weeks.

Interventions

BIOLOGICALARGX-213

Intravenous or subcutaneous administrations of ARGX-213

OTHERPlacebo

Intravenous or subcutaneous administrations of placebo

Sponsors

argenx
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

* Is at least the local legal age of consent for clinical studies and is aged 18 to 65 years, inclusive, when signing the ICF * Is a female of nonchild bearing potential (either postmenopausal or surgically sterilized) or a male * Has a body weight between 50 and 100 kg and a BMI between 18 and 30.5 kg/m\^2, inclusive

Exclusion criteria

* Has any current or past clinically meaningful medical or psychiatric condition that, in the investigator's opinion, would confound the results of the study or put the participant at undue risk * Has a clinically meaningful abnormality detected on ECG recording regarding either rhythm or conduction

Design outcomes

Primary

MeasureTime frame
Incidence of adverse events, serious adverse events, and adverse events leading to the discontinuationUp to 17 weeks

Secondary

MeasureTime frame
ARGX-213 serum concentrationsUp to 17 weeks
Percent change from baseline in total IgG concentrations in serumUp to 17 weeks
Incidence of antidrug antibodies against ARGX-213 in serumUp to 17 weeks

Countries

Canada

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 24, 2026