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A Phase 3b/4, Double-masked, Randomized, International, Parallel-assignment, Multicenter Trial in Patients with Thyroid Eye Disease to Evaluate the Safety and Tolerability of Different Dosing Durations of Teprotumumab

Status
Active, not recruiting
Phases
Phase 3Phase 4
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2024-515090-96-00
Acronym
HZNP-TEP-402
Enrollment
214
Registered
2024-07-03
Start date
2022-05-10
Completion date
Unknown
Last updated
2026-01-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Thyroid Eye Disease

Brief summary

The percentage of patients who experience at least 1 TEAE and the percentage of patients who experience at least 1 treatment-emergent AESI during treatment with teprotumumab. . The percentage of patients who receive re-treatment

Detailed description

Mean change from Baseline in proptosis measurement in the study eye., Proptosis responder rate (percentage of patients with a ≥2-mm reduction from Baseline in proptosis in the study eye, without deterioration [≥2-mm increase] of proptosis in the fellow eye)., The overall responder rate (percentage of patients with ≥2-point reduction in CAS AND ≥2-mm reduction in proptosis from Baseline in the study eye, provided there is no corresponding deterioration [≥2 point/mm increase] in CAS or proptosis in the fellow eye)., The binocular diplopia responder rate (percentage of patients with baseline binocular diplopia >0 who have a reduction of ≥1 grade)., The binocular diplopia resolution rate (percentage of patients with baseline binocular diplopia >0 who have no binocular diplopia)., Mean change from Baseline in the GO-QoL questionnaire appearance and visual functioning sub-scales., Rate of flares at the end of the Initial Follow-up Period., Time to proptosis response from the first infusion until the end of the Initial Treatment Period., CAS: - Proportion of patients with a CAS ≥3 at Baseline who have a CAS of 0 or 1 at the end of the Initial Treatment Period - Proportion of patients who improve on individual questions on the CAS for - spontaneous orbital pain - gaze-evoked orbital pain., Proportion of patients with complete response at the end of the Initial Follow-up Period, as defined by durability of complete response, Proportion of patients with response at the last assessment in the Initial Follow-up Period, as defined by durability of response at the last assessment in the Initial Follow-up Period., Mean change from Baseline over time in disease biomarkers for patients with a Baseline CAS ≥3., "All other endpoints, except the time to proptosis response, rate of flares at the end of the Initial Follow-up Period, durability of complete response and durability of response at the last assessment in the Initial Follow-up Period, will be assessed by randomized cohort at the end of the Initial Treatment Period, at the end of the Initial Follow-up Period., For patients who require re-treatment, the same endpoints will be estimated at the end of the 24-week Re-treatment Period., Safety and Tolerability Endpoints 1. Incidence of TEAEs, SAEs, TEAEs resulting in premature discontinuation of treatment and treatment-emergent AESIs (infusion reactions, hyperglycemia, hearing impairment, new onset IBD and exacerbation of IBD). ", 2. Incidence of ≥Grade 3 TEAEs. 3. Incidence of ≥Grade 3 laboratory evaluations, in which CTCAE grading is available. 4. The results of best-corrected visual acuity. PK and ADA Endpoints 1. Peak and trough concentrations of teprotumumab. 2. ADA incidence and titers."

Interventions

DRUGPlacebo will consist of a normal saline (0.9% NaCl) solution and will be administered in 100 mL or 250 mL infusion bags
DRUGas appropriate
DRUGper weight-based dosing volumes.

Sponsors

Horizon Therapeutics USA Inc.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
The percentage of patients who experience at least 1 TEAE and the percentage of patients who experience at least 1 treatment-emergent AESI during treatment with teprotumumab. . The percentage of patients who receive re-treatment

Secondary

MeasureTime frame
Mean change from Baseline in proptosis measurement in the study eye., Proptosis responder rate (percentage of patients with a ≥2-mm reduction from Baseline in proptosis in the study eye, without deterioration [≥2-mm increase] of proptosis in the fellow eye)., The overall responder rate (percentage of patients with ≥2-point reduction in CAS AND ≥2-mm reduction in proptosis from Baseline in the study eye, provided there is no corresponding deterioration [≥2 point/mm increase] in CAS or proptosis in the fellow eye)., The binocular diplopia responder rate (percentage of patients with baseline binocular diplopia >0 who have a reduction of ≥1 grade)., The binocular diplopia resolution rate (percentage of patients with baseline binocular diplopia >0 who have no binocular diplopia)., Mean change from Baseline in the GO-QoL questionnaire appearance and visual functioning sub-scales., Rate of flares at the end of the Initial Follow-up Period., Time to proptosis response from the first infusion u

Countries

France, Germany, Italy, Spain

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026