An Open-label, Rollover Trial to Evaluate the Efficacy and Safety of AMG 732 in Participants With Thyroid Eye Disease

Phase 2Not Yet RecruitingNCT07438405

Amgen30 enrolled

Overview

The main objective of this trial is to assess the efficacy of AMG 732 in participants with thyroid eye disease (TED) who are defined as primary nonresponders or relapsed during the safety follow-up in the parent trial (NCT06401044).

Study Type

INTERVENTIONAL

Allocation

Purpose

TREATMENT

Masking

NONE

Enrollment

Conditions

Thyroid Eye Disease

Interventions

AMG 732DRUG

AMG 732 will be administered SC.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 99 Years

Medical Language ↔ Plain English

Inclusion Criteria 1. Signed informed consent which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol. 2. Age ≥ 18 years at the time of signing informed consent for parent trial. 3. Moderate-to-severe TED at the time of enrollment in parent trial and does not require immediate surgical ophthalmological intervention and is not planning corrective surgery/irradiation during the rollover trial. 4. Any worsening in thyroid status should be corrected to maintain euthyroid status for the entire rollover trial. 5. Participants must use protocol-specified contraception during treatment and for an additional 6 months after the last dose of trial intervention. 6. Participants with TED who completed Amgen-sponsored clinical trial of AMG 732. Exclusion Criteria 1. Prior orbital irradiation or decompression in the study eye. 2. Prior adult strabismus surgery. 3. Use of any steroid (intravenous, oral, or injected) and steroid eye drops or other non-steroid immunosuppressive agent, monoclonal antibody except the trial drug in parent trial within a protocol-specified number of months prior to the first injection of study drug. 4. Glycated hemoglobin (HbA1c) \> 6.5% and/or fasting glucose levels\> 126 mg/dL (\> 7 mmol/L) at screening. 5. Malignant condition in the past 5 years or major surgery within 8 weeks or plans to have an elective surgery from screening through end of study. 6. Active liver or kidney disfunction at screening. 7. Positive test for hepatitis B/C or Human immunodeficiency virus (HIV) serology at screening. 8. Known hypersensitivity to teprotumumab, AMG 732 or any other monoclonal antibody products. 9. Participants have had an adverse event that is considered related to AMG 732 which required study drug interruption/discontinuation in the parent study 10. Donated blood, or had significant blood loss, or received a transfusion of any blood or blood products within 60 days prior to day 1 dosing or received a plasma donation within 7 days prior to day 1 dosing. 11. Use of any steroid or other non-steroid immunosuppressive agent, monoclonal antibody, within 3 months prior to the first injection of study drug. 12. History or existing inflammatory bowel disease (ulcerative colitis or Crohn's disease). 13. Other protocol-defined inclusion/exclusion criteria apply.

Outcomes

Primary Outcomes

Number of Participants who are Proptosis Responders in the Trial Eye at Week 24 in Participants with TED who are Defined as Primary Nonresponders or Relapsed During the Safety Follow-up in the Parent Trial

Responders are defined as participants with a ≥ 2 mm reduction from baseline in the trial eye without deterioration (≥ 2 mm increase) of proptosis in the fellow eye.

Time frame: Week 24

Secondary Outcomes

Change from Baseline at Week 24 in Proptosis Measurement by an Exophthalmometer in the Trial Eye in Participants with TED who are Defined as Primary Nonresponders or Relapsed During the Safety Follow-up in the Parent Trial

Time frame: Baseline and Week 24

Number of Participants who are Proptosis Responders in the Trial Eye at Week 24 in Participants with TED who had Relapse after Achieving Proptosis Response in the Parent Trial

Responders are defined as participants with a ≥ 2 mm reduction from baseline in the trial eye without deterioration (≥ 2 mm increase) of proptosis in the fellow eye.

Time frame: Week 24

Change from Baseline at Week 24 in Proptosis Measurement by an Exophthalmometer in the Trial Eye in Participants with TED who had Relapse after Achieving Proptosis Response in the Parent Trial

Time frame: Baseline and Week 24

Number of Participants who are Proptosis Responders in the Trial Eye at Week 24 in Participants with TED who were Defined as Primary Nonresponders in the Parent Trial

Responders are defined as participants with a ≥ 2 mm reduction from baseline in the trial eye without deterioration (≥ 2 mm increase) of proptosis in the fellow eye.

Time frame: Week 24

Change from Baseline at Week 24 in Proptosis Measurement by an Exophthalmometer in the Trial Eye in Participants with TED who were Defined as Primary Nonresponders in the Parent Trial

Central Contacts

Amgen Call Center

CONTACT

866-572-6436 medinfo@amgen.com

Data from ClinicalTrials.gov

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