Assessing the safety of ARGX-109 in healthy adults

A Phase 1, Randomized, Double-Blinded, Placebo-Controlled, Single-Ascending Dose Study to Evaluate the Safety, Tolerability, Pharmacokinetics, Pharmacodynamics, and Immunogenicity of ARGX-109 Administered Subcutaneously in Healthy Adult Participants

Phase 1 Interventional argenx · NCT06799416

This study is testing the safety of a new drug called ARGX-109 in healthy adults aged 18 to 65 to see how it affects them over about 20 weeks.

Quick facts

PhasePhase 1
Study typeInterventional
Enrollment32 (estimated)
Ages18 Years to 65 Years
SexAll
Sponsorargenx Industry-sponsored
Locations1 site (Mount-Royal, Quebec)
Trial IDNCT06799416 on ClinicalTrials.gov

What this trial studies

This study evaluates the safety of ARGX-109 in healthy volunteers aged 18 to 65. Participants will receive either the drug or a placebo and will be monitored for approximately 20 weeks. The study also aims to measure how ARGX-109 is absorbed and processed in the body over time. The findings will help determine the safety profile of this intervention.

Who should consider this trial

Good fit: Ideal candidates are healthy adults aged 18 to 65 with a body weight between 50 and 100 kg and a BMI between 18.5 and 30.0.

Not a fit: Patients with significant medical or psychiatric conditions that could affect study results or pose risks will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide valuable safety data for ARGX-109, informing future treatments for various conditions.

How similar studies have performed: Other studies assessing the safety of new drugs in healthy volunteers have shown success, making this approach well-established.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* is aged 18 to 65 years, inclusive, when signing the ICF
* has a body weight between 50 and 100 kg and a BMI between 18.5 and 30.0 kg/m2, 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

Where this trial is running

Mount-Royal, Quebec

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Healthy Volunteer
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.