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lonigutamab

Phase 1

Thyroid Eye Disease | Monoclonal antibody | Endocrine |ACELYRIN, INC.|Trials Updated: Jul 1, 2025

lonigutamab development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Jan 2023

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindCONTROLLEDDMC
Total Trials1
Total Enrollment31

FDA Designations

No designations recorded

lonigutamab clinical trials

lonigutamab · 1 trial · 1 indication

Phase 1 1
NCT05683496Efficacy and Safety of Lonigutamab in Subjects With Thyroid Eye Disease (TED)Thyroid Eye Disease
COMPLETED31 Analytics
PHASE1COMPLETED
Efficacy and Safety of Lonigutamab in Subjects With Thyroid Eye Disease (TED)
Thyroid Eye DiseaseUnlock trial analytics

Study Endpoints

Primary Endpoints

Incidence and characterization of nonserious treatment emergent adverse events (TEAEs)
Day 1 to Day 169

Safety and Tolerability

Incidence and characterization of serious treatment emergent adverse events (TEAEs)
Day 1 to Day 169

Safety and Tolerability

Secondary Endpoints

PK profile of lonigutamab
Day 1 to Day 169
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Cohort 1EXPERIMENTALSingle SC injection of dose 1 of lonigutamab or placebo at Day 1 and Day 21
Cohort 2EXPERIMENTALmultiple doses of dose 2 of lonigutamab administered SC injection weekly
Cohort 3EXPERIMENTALmultiple doses of lonigutamab dose 3 administered SC injection every 4 weeks.
Cohort 4EXPERIMENTALmultiple doses of lonigutamab dose 4 administered SC injection every 4 or 3 weeks.

Interventions

NameTypeDescription
lonigutamabDRUGsubcutaneous injection
PlaceboDRUGsubcutaneous injection
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Eligibility Criteria

Age Range18 Years to 75 Years
SexALL
Healthy VolunteersNo
Study Sites11

Key Inclusion Criteria: * Male or female, ≥18 and ≤75 years of age. * Proptosis defined in the study eye as ≥3 mm above normal. * Clinical Activity Score (CAS) ≥4 (using a 7-item scale) for the most severely affected eye * Onset of active TED symptoms prior to baseline * Must agree to use highly ef...

Countries:United StatesAustralia
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Frequently asked questions about lonigutamab

What is lonigutamab used for?

Lonigutamab is being developed for the treatment of thyroid eye disease (TED), an autoimmune condition affecting the tissue around the eyes. It is an investigational monoclonal antibody and has not been approved for any indication. Its clinical program has focused on patients 18 years and older with TED.

Who makes lonigutamab?

Lonigutamab is being developed by ACELYRIN, INC., which trades on the Nasdaq under the ticker SLRN. ACELYRIN is the sponsor of the clinical program evaluating the drug in thyroid eye disease.

What phase is lonigutamab in?

Lonigutamab is in Phase 1 clinical development. It is an investigational monoclonal antibody and is not approved by the FDA or any other regulatory agency. One Phase 1 trial in thyroid eye disease has been completed, and no trials are currently listed as active.

What clinical trials is lonigutamab in?

Lonigutamab has been studied in the Phase 1 trial NCT05683496, titled "Efficacy and Safety of Lonigutamab in Subjects With Thyroid Eye Disease (TED)." The trial enrolled 31 participants across the United States and Australia, was randomized, double-blind, and controlled, and is now completed.

How many patients were enrolled in the lonigutamab thyroid eye disease trial?

The Phase 1 trial of lonigutamab in thyroid eye disease, NCT05683496, enrolled 31 participants. It was a randomized, double-blind, controlled study conducted in the United States and Australia in adults 18 years and older with thyroid eye disease, and it has been completed.

Is lonigutamab approved for thyroid eye disease?

No. Lonigutamab is an investigational monoclonal antibody in Phase 1 development for thyroid eye disease and has not received FDA approval. Its only listed clinical trial, NCT05683496, has been completed, and no active trials are currently recorded for the program.