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VRDN-003

Phase 3

Thyroid Eye Disease | Small molecule | Endocrine |Viridian Therapeutics, Inc.|Last Updated: Aug 18, 2026

Target and mechanism

Molecular targetIGF-1R
Target classReceptor
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials3
Total Enrollment423

FDA Designations

No designations recorded

Clinical trial landscape

VRDN-003 · 4 trials · 2 indications

Phase 3 4
NCT07155668A Safety, Tolerability and Pharmacokinetics Study of VRDN-003 in Participants With Thyroid Eye Disease (TED)Thyroid Eye Disease
COMPLETED87 Analytics
NCT06812325A Safety and Tolerability Study of VRDN-003 in Participants With Thyroid Eye Disease (TED)Thyroid Eye Disease (TED)
ACTIVE NOT_RECRUITING320 Analytics
NCT06625398An Efficacy, Safety, and Tolerability Study of VRDN-003 in Participants With Chronic Thyroid Eye Disease (TED)Thyroid Eye Disease
ACTIVE NOT_RECRUITING204 Analytics
NCT06625411An Efficacy, Safety, and Tolerability Study of VRDN-003 in Participants With Active Thyroid Eye Disease (TED)Thyroid Eye Disease
ACTIVE NOT_RECRUITING132 Analytics
PHASE3COMPLETED
A Safety, Tolerability and Pharmacokinetics Study of VRDN-003 in Participants With Thyroid Eye Disease (TED)
Thyroid Eye DiseaseUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
A Safety and Tolerability Study of VRDN-003 in Participants With Thyroid Eye Disease (TED)
Thyroid Eye Disease (TED)Unlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
An Efficacy, Safety, and Tolerability Study of VRDN-003 in Participants With Chronic Thyroid Eye Disease (TED)
Thyroid Eye DiseaseUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
An Efficacy, Safety, and Tolerability Study of VRDN-003 in Participants With Active Thyroid Eye Disease (TED)
Thyroid Eye DiseaseUnlock trial analytics

Study Endpoints

Primary Endpoints

Treatment Emergent Adverse Event (TEAE) incidence rate
Through Week 24
Treatment Emergent Adverse Event (TEAE) incidence rate through Week 24
Week 24
Title: Proptosis Responder Rate in the most proptotic eye as measured by exophtalmometer
At Week 24

Description: Proportion of participants with a ≥2 mm reduction from baseline in proptosis in the most proptotic eye as measured by exophtalmometer \[without a corresponding increase of ≥2 mm in the other eye\]

Proptosis Responder Rate in the most proptotic eye as measured by exophtalmometer
At Week 24

Proportion of participants with a ≥2 mm reduction from baseline in proptosis in the most proptotic eye as measured by exophtalmometer \[without a corresponding increase of ≥2 mm in the other eye\]

Secondary Endpoints

Pharmacokinetic outcome measures
Through Week 24
Change from baseline in proptosis in the study eye at Week 24 as measured by exophthalmometer
Week 24
TEAE incident rate through study completion
Week 52
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
VRDN-003 every 4 weeks using autoinjectorEXPERIMENTAL6 subcutaneous administrations of VRDN-003 \[1 loading dose of 600mg and 5 doses of 300mg\]
VRDN-003 every 8 weeks using autoinjectorEXPERIMENTAL3 subcutaneous administrations of VRDN-003 \[1 loading dose of 600mg and 2 doses of 300mg\]
VRDN-003 every 8 weeks using vial and syringeEXPERIMENTAL3 subcutaneous administrations of VRDN-003 \[1 loading dose of 600mg and 2 doses of 300mg\]
VRDN-003 every 4 weeksEXPERIMENTAL6 subcutaneous administrations of VRDN-003
VRDN-003 every 8 weeksEXPERIMENTAL3 subcutaneous administrations of VRDN-003 and 3 subcutaneous administrations of placebo
Placebo every 4 weeksPLACEBO_COMPARATOR6 subcutaneous administrations of placebo

Interventions

NameTypeDescription
VRDN-003DRUGVRDN-003 is an investigational, subcutaneously administered, humanized monoclonal antibody directed against the Insulin-like Growth Factor-1 receptor (IGF-1R).
AutoinjectorDEVICEThe autoinjector is a single-dose, disposable, ready-to-use delivery device
PlaceboDRUGPlacebo injections that appear identical to VRDN-003 injections but have no active drug.
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Eligibility Criteria

Age Range18 Years to 75 Years
SexALL
Healthy VolunteersNo
Study Sites13

Inclusion Criteria: * Have a clinical diagnosis of TED with or without proptosis, with any CAS (0-7) and in the opinion of the Investigator may benefit from VRDN-003 * Not require immediate ophthalmological or orbital surgery in the study eye for any reason * Must agree to use highly effective cont...

Countries:United StatesFranceGermanyPolandSpainTurkey (Türkiye)United KingdomHungaryNetherlands
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Recent Changes (Last 90 Days)

LOWAug 18, 2026NCT06625398lastUpdatePostDate: changed
LOWAug 18, 2026NCT06625411lastUpdatePostDate: changed
LOWAug 18, 2026NCT06625398lastUpdatePostDate: changed
LOWAug 18, 2026NCT06625411lastUpdatePostDate: changed
MEDIUMJul 26, 2026NCT07155668TRIAL_REMOVED: changed
MEDIUMJul 26, 2026NCT07155668TRIAL_REMOVED: changed
MEDIUMJul 26, 2026NCT07155668TRIAL_REMOVED: changed
HIGHJun 25, 2026NCT07155668Status: ACTIVE_NOT_RECRUITING → COMPLETED
HIGHJun 25, 2026NCT07155668Status: ACTIVE_NOT_RECRUITING → COMPLETED
HIGHJun 25, 2026NCT07155668Status: ACTIVE_NOT_RECRUITING → COMPLETED

Frequently asked questions about VRDN-003

What is VRDN-003 used for in Thyroid Eye Disease?

VRDN-003 is an investigational small molecule being developed for the treatment of Thyroid Eye Disease (TED), a condition affecting the tissues around the eyes. It is currently in Phase 3 clinical trials, with studies evaluating its efficacy, safety, and tolerability in participants with both active and chronic forms of the disease.

What does VRDN-003 target?

VRDN-003 targets the insulin-like growth factor 1 receptor (IGF-1R), a receptor involved in cellular signaling. By targeting IGF-1R, VRDN-003 aims to modulate pathways implicated in Thyroid Eye Disease, potentially reducing inflammation and tissue changes associated with the condition.

Who is developing VRDN-003?

VRDN-003 is being developed by Viridian Therapeutics, Inc., a biopharmaceutical company. The company is conducting Phase 3 clinical trials to evaluate the drug's safety and efficacy in patients with Thyroid Eye Disease.

What phase is VRDN-003 in?

VRDN-003 is in Phase 3 clinical development. It is an investigational drug, meaning it has not yet been approved by regulatory authorities. The ongoing Phase 3 trials are designed to assess its efficacy, safety, and tolerability in participants with Thyroid Eye Disease.

What clinical trials is VRDN-003 in?

VRDN-003 is being studied in several Phase 3 trials. These include NCT06625398 for chronic Thyroid Eye Disease, NCT06625411 for active Thyroid Eye Disease, and NCT06812325 for safety and tolerability. A completed trial, NCT07155668, evaluated safety, tolerability, and pharmacokinetics. All trials are randomized, double-blind, and placebo-controlled.

Is VRDN-003 the same as any other drug?

VRDN-003 is a distinct investigational compound developed by Viridian Therapeutics. It is not known to be the same as any other marketed drug. Its unique mechanism targets IGF-1R, and it is being evaluated specifically for Thyroid Eye Disease in clinical trials.