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Sub-tenon of hyaluronidase alone

Phase 2

Thyroid Eye Disease | Small molecule | Endocrine |Regeneron Pharmaceuticals, Inc.|Last Updated: Dec 31, 2025

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment11
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04311606Anti-VEGF Therapy for Acute Thyroid Eye DiseasePHASE2 COMPLETED 11Nov 2, 2020Dec 17, 2024Dec 31, 20251 United States
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Study Endpoints
Primary Endpoints
Primary Outcome: Safety
45 days

To assess the safety and tolerability of sub-tenon aflibercept in combination with either saline or hyaluronidase (HA) in patients with acute Thyroid Eye Disease (TED) as assessed by the incidence and severity of adverse events

Secondary Endpoints
Secondary Outcome: Safety
Baseline to day 90
Secondary Outcome: Change in Clinical Activity
1-90 days
Secondary Outcome: Change in Ocular Muscle
1-90 days
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Saline and afliberceptEXPERIMENTALGroup 1: Sub-tenon's injection of saline followed by sub-tenon injection of aflibercept
Hyaluronidase and afliberceptEXPERIMENTALGroup 2: Sub-tenon's injection of hyaluronidase (HA) followed by sub-tenon injection of aflibercept
Hyaluronidase alonePLACEBO_COMPARATORGroup 3: Sub-tenon injection of HA injection alone
Interventions
NameTypeDescription
Sub-tenon injection of saline followed by a sub-tenon injection of afliberceptDRUGThe study will randomly assign a total of eight subjects into this treatment arm to receive a sub-tenon injection of saline followed by injection of 4 mg aflibercept (total volume 1.1 ml) in the worse eye. Injections will be given three times: on day 1, day 14 and day 28. Subjects will be followed until day 90.
Sub-tenon injection of hyaluronidase (HA) followed by a sub-tenon injection of afliberceptDRUGThe study will randomly assign a total of eight subjects into this treatment arm to receive a sub-tenon injection of hyaluronidase (HA) followed by injection of 4 mg aflibercept (total volume 1.1 ml) in the worse eye. Injections will be given three times: on day 1, day 14 and day 28. Subjects will be followed until day 90.
Sub-tenon injection of hyaluronidase (HA) aloneDRUGThe study will randomly assign a total of eight subjects into this treatment arm to receive a sub-tenon injection of hyaluronidase (HA) injection alone (total volume 1.1 ml) in the worse eye. Injections will be given three times: on day 1, day 14 and day 28. Subjects will be followed until day 90.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: 1. Minimum of 18 years-old 2. Active Thyroid Eye Disease 3. Clinical Activity Score (CAS) between 3 and 5, inclusive 4. Phakic and pseudophakic eyes are allowed in the study. 5. Willing and able to provide written informed consent after the nature of the study has been explained...

Countries:United States
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