Clinical Trial Results:
Safety and Efficacy with Twice Daily Brinzolamide 1% / Brimonidine 0.2% (SIMBRINZA®) as an Adjunctive Therapy to Travoprost 0.004% / Timolol 0.5% (DUOTRAV®)
Summary
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EudraCT number |
2016-000176-20 |
Trial protocol |
ES BE GB DE GR FR NL |
Global end of trial date |
13 Jul 2018
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Results information
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Results version number |
v1(current) |
This version publication date |
09 May 2019
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First version publication date |
09 May 2019
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Other versions |
Trial Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
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Trial identification
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Sponsor protocol code |
GLJ576-P001
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
NCT02730871 | ||
WHO universal trial number (UTN) |
- | ||
Sponsors
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Sponsor organisation name |
Alcon Research
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Sponsor organisation address |
6201 S. Freeway, Fort Worth, TX, United States, 76134
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Public contact |
EMEA Regulatory Affairs, Alcon Eye Care UK Ltd, emea.ra@alcon.com
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Scientific contact |
EMEA Regulatory Affairs, Alcon Eye Care UK Ltd, emea.ra@alcon.com
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Paediatric regulatory details
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Is trial part of an agreed paediatric investigation plan (PIP) |
No
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Does article 45 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
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Does article 46 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
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Results analysis stage
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Analysis stage |
Final
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Date of interim/final analysis |
13 Jul 2018
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Is this the analysis of the primary completion data? |
No
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Global end of trial reached? |
Yes
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Global end of trial date |
13 Jul 2018
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Was the trial ended prematurely? |
Yes
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General information about the trial
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Main objective of the trial |
The purpose of this study was to evaluate the additive intraocular pressure (IOP) lowering effect of Brinzolamide 1%/Brimonidine 0.2% (SIMBRINZA®) dosed twice daily (BID) when added to Travoprost 0.004%/Timolol 0.5% (DUOTRAV®) in subjects with open-angle glaucoma or ocular hypertension.
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Protection of trial subjects |
Prior to the start of the study, the study protocol, the informed consent and assent documents, patient instruction sheets, the Investigator’s Brochure, as well as any advertising materials used to recruit patients were submitted to institutional review boards (IRBs) and independent ethics committees (IECs). The IRB/IECs reviewed all documents and approved required documents; copies of the approval letters were provided to Alcon. Consistent with both the IRB/IEC’s requirements and all applicable regulations, the Investigators periodically provided study updates to the IRB/IEC. This study was conducted in accordance with Good Clinical Practices (GCP) and the ethical principles that have their origins in the Declaration of Helsinki.
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Background therapy |
- | ||
Evidence for comparator |
- | ||
Actual start date of recruitment |
24 Jun 2016
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Long term follow-up planned |
No
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Independent data monitoring committee (IDMC) involvement? |
No
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Population of trial subjects
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Number of subjects enrolled per country |
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Country: Number of subjects enrolled |
Poland: 11
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Country: Number of subjects enrolled |
Spain: 20
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Country: Number of subjects enrolled |
United Kingdom: 4
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Country: Number of subjects enrolled |
Belgium: 2
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Country: Number of subjects enrolled |
Germany: 10
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Country: Number of subjects enrolled |
Greece: 4
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Country: Number of subjects enrolled |
Argentina: 33
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Country: Number of subjects enrolled |
Australia: 2
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Country: Number of subjects enrolled |
Chile: 1
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Country: Number of subjects enrolled |
Colombia: 12
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Country: Number of subjects enrolled |
Malaysia: 6
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Country: Number of subjects enrolled |
Taiwan: 6
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Country: Number of subjects enrolled |
Italy: 23
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Worldwide total number of subjects |
134
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EEA total number of subjects |
74
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Number of subjects enrolled per age group |
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In utero |
0
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Preterm newborn - gestational age < 37 wk |
0
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Newborns (0-27 days) |
0
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Infants and toddlers (28 days-23 months) |
0
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Children (2-11 years) |
0
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Adolescents (12-17 years) |
0
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Adults (18-64 years) |
50
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From 65 to 84 years |
79
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85 years and over |
5
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Recruitment
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Recruitment details |
Subjects were recruited from sites located in Argentina, Australia, Belgium, Chile, Columbia, Germany, Greece, Italy, Malaysia, Poland, Spain, Taiwan, and the United Kingdom. | |||||||||||||||
Pre-assignment
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Screening details |
Of the 173 enrolled, 39 subjects were exited as screen failures prior to randomization. This reporting group includes all randomized and treated subjects (134). | |||||||||||||||
Period 1
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Period 1 title |
Overall (overall period)
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Is this the baseline period? |
Yes | |||||||||||||||
Allocation method |
Randomised - controlled
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Blinding used |
Double blind | |||||||||||||||
Roles blinded |
Subject, Investigator | |||||||||||||||
Arms
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Are arms mutually exclusive |
Yes
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Arm title
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Simbrinza + Duotrav | |||||||||||||||
Arm description |
Brinzolamide 1%/brimonidine tartrate 0.2% ophthalmic suspension, 1 drop instilled 2 times per day in affected eye(s) (09:00 and 21:00 hrs) plus travoprost 0.004%/timolol 0.5% solution, 1 drop instilled in the affected eye(s) daily in the morning (at 9:00) or in the evening (at 21:00) for 42 days (Treatment Phase) | |||||||||||||||
Arm type |
Experimental | |||||||||||||||
Investigational medicinal product name |
Brinzolamide 1%/brimonidine tartrate 0.2% ophthalmic suspension
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Investigational medicinal product code |
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Other name |
SIMBRINZA® suspension
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Pharmaceutical forms |
Eye drops, suspension
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Routes of administration |
Ocular use
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Dosage and administration details |
One drop instilled 2 times per day in affected eye(s) (09:00 and 21:00 hrs) for 42 days (Treatment Phase)
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Investigational medicinal product name |
Travoprost 0.004%/timolol 0.5% solution
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Investigational medicinal product code |
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Other name |
DUOTRAV®
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Pharmaceutical forms |
Eye drops, solution
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Routes of administration |
Ocular use
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Dosage and administration details |
One drop instilled in the affected eye(s) daily in the morning (at 9:00) or in the evening (at 21:00) for 42 days (Treatment Phase)
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Arm title
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Vehicle + Duotrav | |||||||||||||||
Arm description |
Brinzolamide/brimonidine vehicle, 1 drop instilled 2 times per day in affected eye(s) (09:00 and 21:00 hrs) plus travoprost 0.004%/timolol 0.5% solution, 1 drop instilled in the affected eye(s) daily in the morning (at 9:00) or in the evening (at 21:00) for 42 days (Treatment Phase) | |||||||||||||||
Arm type |
Placebo | |||||||||||||||
Investigational medicinal product name |
Brinzolamide/brimonidine vehicle
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Eye drops, suspension
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Routes of administration |
Ocular use
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Dosage and administration details |
One drop instilled 2 times per day in affected eye(s) (09:00 and 21:00 hrs) for 42 days (Treatment Phase)
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Investigational medicinal product name |
Travoprost 0.004%/timolol 0.5% solution
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Investigational medicinal product code |
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Other name |
DUOTRAV®
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Pharmaceutical forms |
Eye drops, solution
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Routes of administration |
Ocular use
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Dosage and administration details |
One drop instilled in the affected eye(s) daily in the morning (at 9:00) or in the evening (at 21:00) for 42 days (Treatment Phase)
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Baseline characteristics reporting groups
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Reporting group title |
Simbrinza + Duotrav
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Reporting group description |
Brinzolamide 1%/brimonidine tartrate 0.2% ophthalmic suspension, 1 drop instilled 2 times per day in affected eye(s) (09:00 and 21:00 hrs) plus travoprost 0.004%/timolol 0.5% solution, 1 drop instilled in the affected eye(s) daily in the morning (at 9:00) or in the evening (at 21:00) for 42 days (Treatment Phase) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Vehicle + Duotrav
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Reporting group description |
Brinzolamide/brimonidine vehicle, 1 drop instilled 2 times per day in affected eye(s) (09:00 and 21:00 hrs) plus travoprost 0.004%/timolol 0.5% solution, 1 drop instilled in the affected eye(s) daily in the morning (at 9:00) or in the evening (at 21:00) for 42 days (Treatment Phase) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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End points reporting groups
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Reporting group title |
Simbrinza + Duotrav
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Reporting group description |
Brinzolamide 1%/brimonidine tartrate 0.2% ophthalmic suspension, 1 drop instilled 2 times per day in affected eye(s) (09:00 and 21:00 hrs) plus travoprost 0.004%/timolol 0.5% solution, 1 drop instilled in the affected eye(s) daily in the morning (at 9:00) or in the evening (at 21:00) for 42 days (Treatment Phase) | ||
Reporting group title |
Vehicle + Duotrav
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Reporting group description |
Brinzolamide/brimonidine vehicle, 1 drop instilled 2 times per day in affected eye(s) (09:00 and 21:00 hrs) plus travoprost 0.004%/timolol 0.5% solution, 1 drop instilled in the affected eye(s) daily in the morning (at 9:00) or in the evening (at 21:00) for 42 days (Treatment Phase) |
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End point title |
Mean Change From Baseline in Diurnal Intraocular Pressure (IOP) (Mean of Changes at 09:00 and 11:00 Time Points) at Week 6 | ||||||||||||
End point description |
IOP (fluid pressure inside the eye) was assessed using Goldmann applanation tonometry. Diurnal IOP change was defined as the average of the two changes from baseline (timepoints 9 AM, 11 AM). A more negative change from baseline indicates a greater improvement, i.e., a reduction of IOP. Only one eye (study eye) was used for the analyses. Full Analysis Set. At each time point, only subjects with a value at both baseline and that time point are included in the calculation of change.
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End point type |
Primary
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End point timeframe |
Baseline, Week 6
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Statistical analysis title |
Mean Change From Baseline in Diurnal IOP | ||||||||||||
Comparison groups |
Simbrinza + Duotrav v Vehicle + Duotrav
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Number of subjects included in analysis |
128
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||
P-value |
< 0.001 | ||||||||||||
Method |
ANCOVA | ||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||
Point estimate |
-2.15
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
-2.8 | ||||||||||||
upper limit |
-1.5 | ||||||||||||
Variability estimate |
Standard error of the mean
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Dispersion value |
0.342
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End point title |
Mean Diurnal IOP at Week 6 | ||||||||||||
End point description |
IOP (fluid pressure inside the eye) was assessed using Goldmann applanation tonometry. Diurnal IOP was defined as the average of the two time points measured (9 AM, 11 AM). A higher IOP can be a greater risk factor for developing glaucoma or glaucoma progression (leading to optic nerve damage). Only one eye (study eye) was used for the analyses. Full Analysis Set with non-missing values.
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End point type |
Secondary
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End point timeframe |
Week 6
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Statistical analysis title |
Mean Diurnal IOP at Week 6 | ||||||||||||
Comparison groups |
Simbrinza + Duotrav v Vehicle + Duotrav
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Number of subjects included in analysis |
128
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Analysis specification |
Pre-specified
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Analysis type |
other | ||||||||||||
P-value |
< 0.001 | ||||||||||||
Method |
ANCOVA | ||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||
Point estimate |
-2.15
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
-2.8 | ||||||||||||
upper limit |
-1.5 | ||||||||||||
Variability estimate |
Standard error of the mean
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Dispersion value |
0.342
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End point title |
Mean Percentage Change From Baseline (BL) in Diurnal IOP at Week 6 | ||||||||||||
End point description |
IOP (fluid pressure inside the eye) was assessed using Goldmann applanation tonometry. Diurnal IOP percentage change was defined as the average of the two changes from baseline (timepoints 9 AM, 11 AM). A more negative percentage change from baseline indicates a greater improvement, i.e., a reduction of IOP. Only one eye (study eye) was used for the analyses. Full Analysis Set. At each time point, only subjects with a value at both baseline and that time point are included in the calculation of change.
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End point type |
Secondary
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End point timeframe |
Baseline, Week 6
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Statistical analysis title |
Mean Percentage Change From BL in Diurnal IOP | ||||||||||||
Statistical analysis description |
At Week 6
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Comparison groups |
Simbrinza + Duotrav v Vehicle + Duotrav
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Number of subjects included in analysis |
128
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Analysis specification |
Pre-specified
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Analysis type |
other | ||||||||||||
P-value |
< 0.001 | ||||||||||||
Method |
ANCOVA | ||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||
Point estimate |
-9.98
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
-13.1 | ||||||||||||
upper limit |
-6.9 | ||||||||||||
Variability estimate |
Standard error of the mean
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Dispersion value |
1.572
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End point title |
Mean Change From Baseline in IOP (09:00, 11:00) at Week 6 | ||||||||||||||||||
End point description |
IOP (fluid pressure inside the eye) was assessed using Goldmann applanation tonometry. A more negative change from baseline indicates a greater improvement, i.e., a reduction of IOP. Only one eye (study eye) was used for the analyses. Full Analysis Set. At each time point, only subjects with a value at both baseline and that time point are included in the calculation of change.
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End point type |
Secondary
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End point timeframe |
Baseline, Week 6
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Statistical analysis title |
Change From Baseline in IOP at 09:00 | ||||||||||||||||||
Statistical analysis description |
At Week 6
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Comparison groups |
Simbrinza + Duotrav v Vehicle + Duotrav
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Number of subjects included in analysis |
128
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Analysis specification |
Pre-specified
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Analysis type |
other | ||||||||||||||||||
P-value |
= 0.022 | ||||||||||||||||||
Method |
Repeated measures model | ||||||||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||||||||
Point estimate |
-1.33
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Confidence interval |
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level |
95% | ||||||||||||||||||
sides |
2-sided
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lower limit |
-2.5 | ||||||||||||||||||
upper limit |
-0.2 | ||||||||||||||||||
Variability estimate |
Standard error of the mean
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Dispersion value |
0.576
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Statistical analysis title |
Change From Baseline in IOP at 11:00 | ||||||||||||||||||
Statistical analysis description |
At Week 6
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Comparison groups |
Simbrinza + Duotrav v Vehicle + Duotrav
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Number of subjects included in analysis |
128
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Analysis specification |
Pre-specified
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Analysis type |
other | ||||||||||||||||||
P-value |
< 0.001 | ||||||||||||||||||
Method |
Repeated measures model | ||||||||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||||||||
Point estimate |
-2.85
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Confidence interval |
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level |
95% | ||||||||||||||||||
sides |
2-sided
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lower limit |
-3.9 | ||||||||||||||||||
upper limit |
-1.9 | ||||||||||||||||||
Variability estimate |
Standard error of the mean
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Dispersion value |
0.506
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End point title |
Mean Percentage Change From Baseline in IOP (09:00, 11:00) at Week 6 | ||||||||||||||||||
End point description |
IOP (fluid pressure inside the eye) was assessed using Goldmann applanation tonometry. A more negative percentage change from baseline indicates a greater improvement, i.e., a reduction of IOP. Only one eye (study eye) was used for the analyses. Full Analysis Set. At each time point, only subjects with a value at both Baseline and that time point are included in the calculation of change.
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End point type |
Secondary
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End point timeframe |
Baseline, Week 6
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Statistical analysis title |
Percentage Change From Baseline in IOP at 09:00 | ||||||||||||||||||
Statistical analysis description |
At Week 6
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Comparison groups |
Simbrinza + Duotrav v Vehicle + Duotrav
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Number of subjects included in analysis |
128
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Analysis specification |
Pre-specified
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Analysis type |
other | ||||||||||||||||||
P-value |
= 0.018 | ||||||||||||||||||
Method |
Repeated measures model | ||||||||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||||||||
Point estimate |
-6.15
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Confidence interval |
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level |
95% | ||||||||||||||||||
sides |
2-sided
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lower limit |
-11.2 | ||||||||||||||||||
upper limit |
-1.1 | ||||||||||||||||||
Variability estimate |
Standard error of the mean
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Dispersion value |
2.567
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Statistical analysis title |
Percentage Change from Baseline in IOP at 11:00 | ||||||||||||||||||
Comparison groups |
Simbrinza + Duotrav v Vehicle + Duotrav
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Number of subjects included in analysis |
128
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Analysis specification |
Pre-specified
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Analysis type |
other | ||||||||||||||||||
P-value |
< 0.001 | ||||||||||||||||||
Method |
Repeated measures model | ||||||||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||||||||
Point estimate |
-13.21
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Confidence interval |
|||||||||||||||||||
level |
95% | ||||||||||||||||||
sides |
2-sided
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lower limit |
-17.8 | ||||||||||||||||||
upper limit |
-8.6 | ||||||||||||||||||
Variability estimate |
Standard error of the mean
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Dispersion value |
2.34
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Adverse events information [1]
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Timeframe for reporting adverse events |
Baseline through study completion, an average of 42 days
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Adverse event reporting additional description |
Adverse Events (AE) were obtained through solicited and spontaneous comments from subjects and through observations by the Investigator as outlined in the study protocol. Includes all subjects who received a dose of masked investigational product (Safety Analysis Set).
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Assessment type |
Systematic | ||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
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Dictionary name |
MedDRA | ||||||||||||||||||||||||||||||
Dictionary version |
21.0
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Reporting groups
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Reporting group title |
Simbrinza + Duotrav
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Reporting group description |
Brinzolamide 1%/brimonidine tartrate 0.2% ophthalmic suspension, 1 drop instilled 2 times per day in affected eye(s) (09:00 and 21:00 hrs) plus travoprost 0.004%/timolol 0.5% solution, 1 drop instilled in the affected eye(s) daily in the morning (at 9:00) or in the evening (at 21:00) for 42 days (Treatment Phase) | ||||||||||||||||||||||||||||||
Reporting group title |
Vehicle + Duotrav
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Reporting group description |
Brinzolamide/brimonidine vehicle, 1 drop instilled 2 times per day in affected eye(s) (09:00 and 21:00 hrs) plus travoprost 0.004%/timolol 0.5% solution, 1 drop instilled in the affected eye(s) daily in the morning (at 9:00) or in the evening (at 21:00) for 42 days (Treatment Phase) | ||||||||||||||||||||||||||||||
Notes [1] - There are no non-serious adverse events recorded for these results. It is expected that there will be at least one non-serious adverse event reported. Justification: No non-serious adverse events occurred greater than the 5% threshold. |
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Frequency threshold for reporting non-serious adverse events: 5% | |||||||||||||||||||||||||||||||
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Substantial protocol amendments (globally) |
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Were there any global substantial amendments to the protocol? Yes | |||
Date |
Amendment |
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10 Apr 2017 |
In order to facilitate subject recruitment, the amendment lowered the qualifying IOP criteria at both the Eligibility 1 and Eligibility 2 visits, removed the late day (15:00) IOP measurement time point reducing subject commitment, and allowed subjects currently on treatment with DUOTRAV for at least 28 days prior to screening in the morning or evening to be eligible for the study. To minimize unnecessary patient enrollment in the trial, an interim analysis was added at 50% completion to test for statistical differences between treatments. If it was achieved, the study enrollment would have been stopped and subjects in the study completed their visits. |
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Interruptions (globally) |
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Were there any global interruptions to the trial? No | |||
Limitations and caveats |
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Limitations of the trial such as small numbers of subjects analysed or technical problems leading to unreliable data. | |||
None reported |