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Can a Pen-Style injector match a syringe for delivering efgartigimod?

NCT ID NCT07782775

Knowledge-focused Sponsor: argenx Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Aug 24, 2026 · Last updated Aug 25, 2026 · Updated 1 time

Summary

This study tests whether a biologic medicine called efgartigimod PH20 SC enters the bloodstream the same way when given by an autoinjector pen versus a prefilled syringe. Healthy adults aged 18 to 55 will receive a single dose of the drug by each method, in random order, with blood samples taken over several weeks to compare drug levels. The goal is to see if the two devices are equivalent, which could offer patients a more convenient injection option.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Efgartigimod PH20 SC, a biologic given as a subcutaneous injection, delivered via two devices: a prefilled syringe and an autoinjector.
What this could lead to
If the two devices deliver the drug equally well, it could support using the autoinjector as a convenient alternative for patients who need efgartigimod.
What could go wrong
This is a small, early-phase study in healthy volunteers, not patients. It only checks how the drug is absorbed, not whether it works for any disease, and results may not predict real-world use.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

About 32 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jun 2026

Expected to finish

Sep 2026

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 55 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Is at least the local legal age of consent and aged 18 to 55 years, inclusive, when signing the ICF. * Has a body weight between 50 and 100 kg and a BMI between 18 and 30 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 study results or put the participant at undue risk. * Has received any medications, including nonprescription and prescription medications, within 2 weeks before the first IMP administration, except for hormonal contraceptives and hormone replacement therapy in female participants. The occasional use of acetaminophen or ibuprofen is allowed. * Previously participated in an efgartigimod clinical study and received at least 1 dose of IMP.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Healthy adult participants Healthy volunteer

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The study's own enquiry address

    This study publishes an address for enquiries. See it below .

  2. The places running it

    1 site. The list below names each one and where it is.

  3. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  4. A doctor treating you

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Contacts and locations

Study contacts

  • Contact

    Email: •••••@•••••

Locations

  • Altasciences

    RECRUITING

    Montreal, H3P 3P1, Canada

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