Treatment of Graves' Orbitopathy to Reduce Proptosis With Teprotumumab Infusions in an Open-Label Clinical Extension Study (OPTIC-X)
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|ClinicalTrials.gov Identifier: NCT03461211|
Recruitment Status : Completed
First Posted : March 9, 2018
Results First Posted : July 19, 2021
Last Update Posted : July 19, 2021
|Condition or disease||Intervention/treatment||Phase|
|Thyroid Eye Disease||Biological: Teprotumumab||Phase 3|
This is a multi-center, open-label extension study of HZNP-TEP-301 (NCT03298867) examining the safety and efficacy of teprotumumab in the treatment of TED in adult participants. Participants who complete the 24-week double-masked Treatment Period in Study HZNP-TEP-301 and are proptosis non-responders or are proptosis responders at Week 24 but meet the criteria for re-treatment due to relapse during the Follow-Up Period of HZNP-TEP-301 will be eligible for enrollment.
All participants who choose to participate will receive 8 infusions of teprotumumab (10 mg/kg for the first infusion followed by 20 mg/kg for the remaining 7 infusions) in an open-label fashion. The Baseline (Day 1) Visit of this extension study will occur within 14 days after the final visit of Study HZNP-TEP-301 (Week 24 for proptosis non-responders and up to Week 72 for participants who relapse). During the open-label Treatment Period, study drug infusions are scheduled for Day 1 (Baseline), and Weeks 3, 6, 9, 12, 15, 18, and 21, (with the final visit at Week 24). After completion of the Treatment Period, subjects who were proptosis non-responders in Study HZNP-TEP-301 will enter a 24-week Follow-Up Period during which study drug will not be administered and clinic visits are scheduled for 1, 3, and 6 months (Visits Month 7, 9, and 12) after the Week 24 visit. Subjects will be contacted 6 and 12 months later by phone or email to enquire if any treatment for TED had been received since the last study contact.
Participants who relapse during the Follow-Up Period of HZNP-TEP-301 and choose to enter this extension study will not participate in the Follow-Up Period of this study but will be contacted by phone or email 6 and 12 months after the Week 24 visit.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||51 participants|
|Intervention Model:||Single Group Assignment|
|Masking:||None (Open Label)|
|Official Title:||Multicenter, Safety and Efficacy, Open-Label Extension Study Evaluating Teprotumumab (HZN-001) Treatment in Subjects With Thyroid Eye Disease|
|Actual Study Start Date :||April 16, 2018|
|Actual Primary Completion Date :||June 8, 2020|
|Actual Study Completion Date :||February 17, 2021|
Eight infusions of teprotumumab every 3 weeks (q3W) for a total of 21 weeks: teprotumumab 10 mg/kg administered on Day 1 and teprotumumab 20 mg/kg administered q3W for the remaining 7 infusions.
Teprotumumab is a fully human anti-IGF-1R mAb. Teprotumumab will be provided in single-dose 20 mL glass vials as a freeze-dried powder. Each vial of teprotumumab must be reconstituted with 10 mL of water for injection. Reconstituted teprotumumab solution must be further diluted in 0.9% (w/v) sodium chloride (NaCl) solution prior to administration. Teprotumumab will be administered in 100 mL or 250 mL infusion bags (100 mL infusion bags for doses up to 1800 mg and 250 mL infusion bags for doses > 1800 mg).
Other Name: HZN-001
- 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 [ Time Frame: 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 With a European Group on Graves' Ophthalmopathy (EUGOGO) Amended Clinical Activity Score (CAS) Total Score of 0 or 1 in the Study Eye at Week 24 [ Time Frame: Week 24 ]
CAS responders were defined as participants with a reduction to a CAS of 0 or 1 (no or minimal inflammatory symptoms) as a categorical response variable at Week 24.
The 7-item CAS assigns 1 point for each of the following items present in the study eye: spontaneous orbital pain; gaze evoked orbital pain; eyelid swelling that is considered to be due to active (inflammatory phase) thyroid eye disease/Graves' ophthalmopathy (TED/GO); eyelid erythema; conjunctival redness that is considered to be due to active (inflammatory phase) TED/GO (ignore "equivocal" redness); chemosis; inflammation of caruncle or plica. The sum of these points is the total score (0 to 7), with higher scores indicating worse symptoms.
- Change in Proptosis From Baseline to Week 24 [ Time Frame: Study Baseline, Week 24 ]Mean change from study baseline to Week 24 in proptosis measurement (mm) in the study eye at Week 24.
- Percentage of Participants Who Were Diplopia Responders at Week 24 [ Time Frame: Week 24 ]
Diplopia responders were defined as participants with 1 grade or greater reduction in diplopia score in the study eye without worsening by at least 1 grade in the fellow eye at Week 24.
The subjective diplopia score (0=no diplopia; 1=intermittent, i.e. diplopia in primary position of gaze, when tired or when first awakening; 2=inconstant, i.e. diplopia at extremes of gaze; 3=constant, i.e. continuous diplopia in primary or reading position) was recorded for each eye. A participant was considered to have diplopia if a score > 0 is observed in the study eye at study baseline.
- Mean Change From Baseline to Week 24 in the Graves' Ophthalmopathy Quality of Life (GO-QoL) Questionnaire Overall Score [ Time Frame: Study Baseline, Week 24 ]The GO-QoL is a 16-item self-administered questionnaire divided into 2 subsets and used to assess the perceived effects of TED by the participants on (i) their daily physical activity as it relates to visual function, and (ii) psychosocial functioning. The sum of the scores from each set of 8 questions was calculated and transformed to a scale from 0 (worst) to 100 (best) - one for visual function (VF), one for appearance (A) and one for the overall combined (VF + A) score. Scores were transformed as follows: Transformed score = [(sum of each score - number of completed items) / (2 * number of completed items)] * 100. The "overall combined (VF + A) score" is also 0 to 100, with higher scores indicating a better outcome.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03461211
|United States, California|
|Beverly Hills, California, United States, 90212|
|Cedars-Sinai Medical Center|
|Los Angeles, California, United States, 90078|
|United States, Florida|
|Bascom Palmer Eye Institute|
|Miami, Florida, United States, 33135|
|United States, Michigan|
|Kellogg Eye Center at University of Michigan|
|Ann Arbor, Michigan, United States, 48105|
|United States, Oregon|
|Casey Eye Institute at Oregon Health and Science|
|Portland, Oregon, United States, 97239|
|United States, Tennessee|
|Hamilton Eye Institute at University of Tennessee Health|
|Memphis, Tennessee, United States, 38163|
|United States, Texas|
|Eye Wellness Center|
|Houston, Texas, United States, 77005|
|United States, Wisconsin|
|Medical College of Wisconsin, The Eye Institute|
|Milwaukee, Wisconsin, United States, 53226|
|University Hospital Essen, Department of Ophthalmology|
|Essen, Germany, 45147|
|Johannes Gutenberg University Medical Center|
|Mainz, Germany, 55131|
|Fondazione IRCCS Ca Granda Ospedale Maggiore|
|Milan, Italy, 20122|
|University of Pisa, Department of Clinical and Experimental Medicine|
|Pisa, Italy, 56100|
|Azienda Ospedaliero Universitaria Pisana|
|Pisa, Italy, 56124|
|Principal Investigator:||Raymond Douglas, MD, PhD||Cedars-Sinai Medical Center|
|Principal Investigator:||George Kahaly, MD, PhD||Johannes Gutenberg University Medical Center|