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Teprotumumab

Phase 3

Thyroid Eye Disease | Monoclonal antibody | Endocrine |Amgen Inc.|Last Updated: Jul 7, 2026

Target and mechanism

Molecular targetIGF1R
Target classAntagonist
ModalityMonoclonal antibody

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials4
Total Enrollment239

FDA Designations

No designations recorded

Clinical trial landscape

Teprotumumab · 8 trials · 6 indications

Phase 3 3Phase 2 1Phase 1 4
NCT06248619A Trial to Investigate Teprotumumab Subcutaneous Administration Compared With Placebo in Male and Female Adult Participants With Moderate-to-severe Active Thyroid Eye DiseaseThyroid Eye Disease
ACTIVE NOT_RECRUITING89 Analytics
NCT03461211Treatment of Graves' Orbitopathy to Reduce Proptosis With Teprotumumab Infusions in an Open-Label Clinical Extension StudyThyroid Eye Disease
COMPLETED51 Analytics
NCT03298867Treatment of Graves' Orbitopathy (Thyroid Eye Disease) to Reduce Proptosis With Teprotumumab Infusions in a Randomized, Placebo-Controlled, Clinical StudyThyroid Eye Disease
COMPLETED83 Analytics
PHASE3ACTIVE NOT_RECRUITING
A Trial to Investigate Teprotumumab Subcutaneous Administration Compared With Placebo in Male and Female Adult Participants With Moderate-to-severe Active Thyroid Eye Disease
Thyroid Eye DiseaseUnlock trial analytics
PHASE3COMPLETED
Treatment of Graves' Orbitopathy to Reduce Proptosis With Teprotumumab Infusions in an Open-Label Clinical Extension Study
Thyroid Eye DiseaseUnlock trial analytics
PHASE3COMPLETED
Treatment of Graves' Orbitopathy (Thyroid Eye Disease) to Reduce Proptosis With Teprotumumab Infusions in a Randomized, Placebo-Controlled, Clinical Study
Thyroid Eye DiseaseUnlock trial analytics

Study Endpoints

Primary Endpoints

Proptosis responder rate (percentage of participants with a ≥ 2-mm reduction from baseline in proptosis in the study eye without deterioration [≥ 2-mm increase] of proptosis in the fellow eye).
Week 24
Percentage of Participants With a ≥ 2 mm Reduction From Baseline in the Study Eye Without Deterioration of Proptosis in the Fellow Eye at Week 24
Baseline, Week 24

Proptosis responders were defined as participants with a ≥ 2 mm reduction from study baseline in proptosis in the study eye, without deterioration (≥ 2 mm increase) of proptosis in the fellow eye at Week 24. Participants missing Week 24 values were considered non-responders, aside from those with missing data related to the COVID-19 pandemic.

Percentage of Participants Who Were Proptosis Responders at Week 24
Week 24

Proptosis responders were defined as participants with a ≥2 mm reduction from Baseline in proptosis in the study eye, without deterioration (≥2 mm increase) of proptosis in the fellow eye at Week 24.

Responder Status at Week 24
Week 24

Number of participants classified as responders and non-responders at Week 24. Responders were defined as participants with a reduction in clinical activity score (CAS, see Outcome Measure 4 description for details) of ≥ 2 points, and a reduction in proptosis (amount of protrusion of the eye from the orbital rim) of ≥ 2 mm in the study eye, and no deterioration (increase in CAS of ≥ 2 points or increase in proptosis of ≥ 2 mm) in the non-study eye. Participants who had no assessment at 24 weeks were considered non-responders.

Maximum Observed Serum Concentration (Cmax) of Teprotumumab
Up to Day 85
Area Under the Serum Concentration-time Curve From Time Zero to the Last Quantifiable Concentration (AUClast) of Teprotumumab
Up to Day 85
Area Under the Serum Concentration-time Curve From Time Zero to Infinity (AUCinf) of Teprotumumab
Up to Day 85
Area Under the Serum Concentration-time Curve (AUC) From Time 0 Extrapolated to Infinity (AUCinf) of Teprotumumab
Day 1 pre-dose to Day 57
AUC From Time 0 to the Last Quantifiable Concentration (AUClast) of Teprotumumab
Day 1 pre-dose to Day 57
Time to Cmax (Tmax) of Teprotumumab
Day 1 pre-dose to Day 57
Pharmacokinetics (PK): Area Under the Curve (AUC) of Teprotumumab
Pre dose through Week 6

AUC will be evaluated from the collected PK samples.

PK: Maximum Serum Concentration (Cmax) of Teprotumumab
Pre dose through Week 6

Cmax will be evaluated from the collected PK samples.

Number of Participants With Adverse Events (AE)
Up to Week 6

An AE is any untoward medical occurrence in a participant or clinical investigation subject administered a pharmaceutical product and that does not necessarily have a causal relationship with this treatment. An AE can, therefore, be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom or disease temporally associated with the use of a medicinal (investigational) product, whether or not considered related to the medicinal (investigational) product.

Safety of RV001in subjects with Diabetic Macular Edema
Change from Baseline to Week 9

Number of subjects with adverse events, serious adverse events and early discontinuations due to adverse events. Number of subjects with clinical significant abnormal laboratory values, electrocardiograms (pre and post infusions), abnormal vital signs, ophthalmic and physical examinations.

Secondary Endpoints

Mean change from Baseline in proptosis measurement in the study eye
Week 24
Overall responder rate (percentage of participants with ≥ 2-point reduction in CAS AND ≥ 2-mm reduction in proptosis from Baseline, provided there is no corresponding deterioration [≥ 2-point/mm increase] in CAS or proptosis in the fellow eye)
Week 24
Percentage of participants with a CAS value of 0 or 1
Week 24
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
TeprotumumabEXPERIMENTALTeprotumumab administered SC
PlaceboPLACEBO_COMPARATORPlacebo for teprotumumab administered SC
Teprotumumab 20 mg/kgACTIVE_COMPARATORApproximately 38 participants will receive 8 infusions of teprotumumab q3W for a total of 21 weeks. Teprotumumab 10 mg/kg will be administered on Day 1 and teprotumumab 20 mg/kg will be administered q3W for the remaining 7 infusions.
Cohort 1: TeprotumumabEXPERIMENTALNon-Japanese participants will receive SC injection of teprotumumab Dose A by a syringe pump.
Cohort 2: TeprotumumabEXPERIMENTALJapanese participants will receive SC injection of teprotumumab Dose A by a syringe pump.
Cohort 3: TeprotumumabEXPERIMENTALNon-Japanese participants will receive SC injection of teprotumumab Dose B by an injection device.
Cohort 1EXPERIMENTALParticipants will receive a single dose of lyophilized teprotumumab by subcutaneous (SC) administration on Day 1 followed by intravenous (IV) infusions of teprotumumab at the approved dosing regimen.
Cohort 2EXPERIMENTALParticipants will receive a single high concentration formulation teprotumumab by SC administration on Day 1 followed by IV infusions of teprotumumab at the approved dosing regimen.

Interventions

NameTypeDescription
TeprotumumabBIOLOGICALSC injection
PlaceboOTHERSC injection
normal salineDRUG -
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Eligibility Criteria

Age Range18 Years to 80 Years
SexALL
Healthy VolunteersNo
Study Sites38

Inclusion Criteria: 1. Participant must provide written informed consent. 2. Participant can be male or female and must be between the ages of 18 and 80 years, inclusive, at Screening. 3. Participant must have a clinical diagnosis of Graves' disease associated with active TED with a CAS ≥ 3 (on the...

Countries:United StatesArgentinaAustraliaCanadaFranceGermanyItalyJapanSpainTaiwanUnited KingdomChina
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Recent Changes (Last 90 Days)

LOWJul 7, 2026NCT06248619primaryCompletionDate: changed
LOWJul 7, 2026NCT06248619primaryCompletionDate: changed

Frequently asked questions about Teprotumumab

What is Teprotumumab used for?

Teprotumumab is an investigational drug being studied for thyroid eye disease, diabetic macular edema, and thyroid associated ophthalmopathies. It has also been evaluated in healthy volunteers for pharmacokinetic studies. The drug is in clinical development, with trials ranging from Phase 1 to Phase 2, and is not yet approved for any indication.

What does Teprotumumab target?

Teprotumumab is a monoclonal antibody, as indicated by its -mab suffix. It is being developed by Amgen Inc. for use in ophthalmology, specifically for conditions like thyroid eye disease and diabetic macular edema. The specific molecular target is not disclosed in the available clinical trial information.

Who makes Teprotumumab?

Teprotumumab is developed by Amgen Inc., a biopharmaceutical company traded on NASDAQ under the ticker AMGN. Amgen is conducting clinical trials to evaluate the drug for thyroid eye disease, diabetic macular edema, and other thyroid-associated ophthalmopathies.

What phase is Teprotumumab in?

Teprotumumab is in Phase 1 clinical development, with one active trial and three completed trials. The completed trials include a Phase 2 study in thyroid eye disease and Phase 1 studies in diabetic macular edema and healthy volunteers. It remains investigational and is not FDA approved.

What clinical trials is Teprotumumab in?

Teprotumumab has been studied in four clinical trials. NCT01868997 was a Phase 2 trial in active thyroid eye disease. NCT02103283 was a Phase 1 trial in diabetic macular edema. NCT06674941 and NCT07142642 were Phase 1 trials in healthy volunteers, with the latter specifically in Chinese participants.

Is Teprotumumab the same as AMG 632?

Yes, Teprotumumab is also known as AMG 632, as referenced in the clinical trial NCT07142642. This trial evaluates the pharmacokinetics, safety, and tolerability of Teprotumumab (AMG 632) administered intravenously in healthy Chinese participants.