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Efgartigimod PH20 via PFS

Phase 1

Healthy Volunteer | Monoclonal antibody | Other |argenx SE|Last Updated: Aug 24, 2026

Target and mechanism

Molecular targetFCGRT
Target classAntagonist
ModalityMonoclonal antibody

Also known as Efgartigimod PH20 SC via PFS

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLED
Total Trials1
Total Enrollment32

FDA Designations

No designations recorded

Clinical trial landscape

Efgartigimod PH20 via PFS · 1 trial · 2 indications

Phase 1 1
NCT07782775A Study to Assess the Bioequivalence of Efgartigimod PH20 SC Between Autoinjector and Prefilled Syringe in Healthy Adult ParticipantsHealthy Volunteer
RECRUITING32 Analytics
PHASE1RECRUITING
A Study to Assess the Bioequivalence of Efgartigimod PH20 SC Between Autoinjector and Prefilled Syringe in Healthy Adult Participants
Healthy VolunteerUnlock trial analytics

Study Endpoints

Primary Endpoints

Primary PK parameter: Cmax
Up to 9 weeks

Cmax = maximum observed concentration

Primary PK parameter: AUC0-inf
Up to 9 weeks

AUC0-inf = area under the curve from time 0 to infinity

Secondary Endpoints

Secondary PK parameter: AUC0-t
Up to 9 weeks
Secondary PK parameter: AUC0-168h
Up to 9 weeks
Secondary PK parameter: CL/F
Up to 9 weeks
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelCROSSOVER
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Treatment sequence 1EXPERIMENTALParticipants randomized to receive Efgartigimod PH20 SC via AI in period 1 and Efgartigimod PH20 SC via PFS in period 2
Treatment sequence 2EXPERIMENTALParticipants randomized to receive Efgartigimod PH20 SC via PFS in period 1 and Efgartigimod PH20 SC via AI in period 2

Interventions

NameTypeDescription
Efgartigimod PH20 SC via PFSBIOLOGICALSubcutaneous injection of empasiprubart via Prefilled syringe (PFS)
Efgartigimod PH20 SC via AIBIOLOGICALSubcutaneous injection of empasiprubart via Autoinjector (AI)
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Eligibility Criteria

Age Range18 Years to 55 Years
SexALL
Healthy VolunteersYes
Study Sites1

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 psychia...

Countries:Canada
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Recent Changes (Last 90 Days)

LOWAug 24, 2026NCT07782775NEW_TRIAL: changed
LOWAug 24, 2026NCT07782775NEW_TRIAL: changed

Frequently asked questions about Efgartigimod PH20 via PFS

What is Efgartigimod PH20 via PFS?

Efgartigimod PH20 via PFS is an investigational monoclonal antibody being developed by argenx SE for use in healthy volunteers. It is currently in Phase 1 clinical development, with one active trial recruiting participants. The drug is administered via a prefilled syringe formulation.

What is Efgartigimod PH20 via PFS used for?

Efgartigimod PH20 via PFS is being studied in healthy adult participants as part of a Phase 1 clinical trial. The trial aims to assess the bioequivalence of the drug when delivered via an autoinjector compared to a prefilled syringe. It is not yet approved for any medical condition.

Who makes Efgartigimod PH20 via PFS?

Efgartigimod PH20 via PFS is developed by argenx SE, a biopharmaceutical company listed on the stock exchange under the ticker ARGX. The company is conducting a Phase 1 clinical trial to evaluate the drug's bioequivalence in healthy volunteers.

What phase is Efgartigimod PH20 via PFS in?

Efgartigimod PH20 via PFS is in Phase 1 clinical development. It is an investigational drug, meaning it has not been approved by regulatory authorities. The ongoing trial is recruiting participants to study the drug's bioequivalence in healthy adults.

What clinical trials is Efgartigimod PH20 via PFS in?

Efgartigimod PH20 via PFS is being studied in one active Phase 1 clinical trial, identified as NCT07782775. This trial is recruiting 32 healthy adult participants in Canada to assess the bioequivalence of the drug between an autoinjector and a prefilled syringe.

Is Efgartigimod PH20 via PFS the same as Efgartigimod PH20 SC via PFS?

Yes, Efgartigimod PH20 via PFS is also known as Efgartigimod PH20 SC via PFS. Both names refer to the same investigational monoclonal antibody developed by argenx SE, currently in Phase 1 clinical trials for healthy volunteers.