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gefurulimab

Phase 3

Generalized Myasthenia Gravis | Monoclonal antibody | Neurology |AstraZeneca PLC|Trials Updated: Apr 1, 2026

gefurulimab development status

Highest phase Phase 3
Registered trials 2 across 1 sponsor since Sep 2024

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials1
Total Enrollment12

FDA Designations

No designations recorded

gefurulimab clinical trials

gefurulimab · 1 trial · 2 indications

Phase 3 1
NCT06607627PK, PD, Safety, and Efficacy Study of Gefurulimab in Pediatric Patients With AChR+ Generalized Myasthenia GravisGeneralized Myasthenia Gravis
RECRUITING12 Analytics
PHASE3RECRUITING
PK, PD, Safety, and Efficacy Study of Gefurulimab in Pediatric Patients With AChR+ Generalized Myasthenia Gravis
Generalized Myasthenia GravisUnlock trial analytics

Study Endpoints

Primary Endpoints

Maximum Observed Serum Concentration (Cmax) of Gefurulimab
Day 1 predose through Week 18 predose
Serum Free Complement Component 5 (C5) Concentration
Day 1 predose through Week 18 predose

Secondary Endpoints

Number of Participants With Treatment-emergent Adverse Events (TEAEs) and Treatment-emergent Serious Adverse Events (TESAEs)
Day 1 through Week 134
Change in Quantitative Myasthenia Gravis Score for Disease Severity (QMG) Total Score From Baseline Through Week 18
Baseline through Week 18
Number of Participants With ≥ 5-point Reduction From Baseline in the QMG Total Score Through Week 18
Baseline through Week 18
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
GefurulimabEXPERIMENTALOn Day 1, participants will receive a weight based loading dose followed by a weekly maintenance dose for up to 122 weeks.

Interventions

NameTypeDescription
GefurulimabCOMBINATION_PRODUCTCombination product consisting of syringe prefilled with gefurulimab will be administered weekly via subcutaneous (SC) injection.
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Eligibility Criteria

Age Range6 Years to 17 Years
SexALL
Healthy VolunteersNo
Study Sites13

Inclusion Criteria: United States of America (USA) specific inclusion criterion: * Participant must be 12 to \< 18 years of age at the time of signing the informed consent/assent. * All participants must be vaccinated against meningococcal infection from serogroups A, B, C, W, and Y within 3 years...

Countries:United StatesBrazilJapanPolandTaiwan
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Frequently asked questions about gefurulimab

What is gefurulimab?

Gefurulimab is an investigational monoclonal antibody being developed by AstraZeneca PLC for generalized myasthenia gravis, a chronic autoimmune neuromuscular condition. It is currently in Phase 3 clinical development and has not been approved by the FDA. The program includes a pediatric study in patients with AChR-positive generalized myasthenia gravis.

What is gefurulimab used for in generalized myasthenia gravis?

Gefurulimab is being studied for the treatment of generalized myasthenia gravis, including in pediatric patients who are positive for acetylcholine receptor antibodies. It is an investigational therapy and is not yet approved for any indication. The ongoing Phase 3 trial is evaluating its use in this patient population.

Who is developing gefurulimab?

Gefurulimab is being developed by AstraZeneca PLC, which trades on the Nasdaq under the ticker AZN. AstraZeneca is the sponsor of the clinical program evaluating the drug in generalized myasthenia gravis.

What phase is gefurulimab in?

Gefurulimab is in Phase 3 clinical development. The only listed trial is a Phase 3 study that is currently recruiting participants. The drug remains investigational and has not received FDA approval.

What clinical trials is gefurulimab in?

Gefurulimab is being evaluated in a single Phase 3 trial, NCT06607627, titled a PK, PD, Safety, and Efficacy Study of Gefurulimab in Pediatric Patients With AChR+ Generalized Myasthenia Gravis. The trial is recruiting up to 12 participants across the United States, Brazil, Japan, Poland, and Taiwan.