6-Week Proof-of-Concept Study of Travoprost/Brinzolamide Ophthalmic Suspension in Subjects With Open-Angle Glaucoma or Ocular Hypertension

Alcon

Status and phase: Completed; Phase 2

Conditions: Glaucoma; Ocular Hypertension

Treatments: Drug: Travoprost 0.004% ophthalmic solution TRAVATAN Z®; Drug: Dose Level C / Brinzolamide 1% ophthalmic suspension; Drug: Brinzolamide suspension vehicle; Drug: Dose Level A / Brinzolamide 1% ophthalmic suspension; Drug: Travoprost solution vehicle; Drug: Dose Level B / Brinzolamide 1% ophthalmic suspension; Drug: Brinzolamide 1% ophthalmic suspension AZOPT®

Study type: Interventional

Funder types: Industry

Identifiers

NCT02140060

C-14-003

Details and patient eligibility

About

The purpose of this study is to evaluate Travoprost/Brinzolamide fixed combination (Trav/Brinz) administered twice daily as compared to each of its marketed components (TRAVATAN Z® solution and AZOPT® suspension) and to the unfixed combination of TRAVATAN Z® plus AZOPT® in lowering intraocular pressure (IOP).

Full description

This study was divided into two phases conducted in sequence. Phase I was the Screening/Eligibility Phase, which included a Screening Visit, followed by two Eligibility Visits. Phase II was the randomized, double-masked, 6-week Treatment Phase which included on-therapy visits at Week 2 and Week 6. Travoprost was administered in 1 of 3 concentration levels (A-C), where A=lowest and C=highest.

Enrollment: 327 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Diagnosed with open-angle glaucoma (including open-angle glaucoma with pseudoexfoliation or pigment dispersion) or ocular hypertension;
• IOP within the protocol-specified range at both the Eligibility 1 and 2 Visits. Mean IOP must not be >36 mmHg at any time point;
• Able to understand and sign an informed consent form;
• Other protocol-specified inclusion criteria may apply.

Exclusion criteria

• Woman of childbearing potential who is currently pregnant, intends to become pregnant during the study period, breastfeeding, or not using adequate birth control methods to prevent pregnancy throughout the study;
• Unable to discontinue all IOP-lowering ocular medication(s) per the appropriate washout schedule prior to the E1 Visit;
• Chronic, recurrent or severe inflammatory eye disease;
• Ocular trauma within the past 6 months prior to the Screening Visit;
• Ocular infection or ocular inflammation within the past 3 months prior to the Screening Visit;
• Clinically relevant or progressive retinal disease such as retinal degeneration, diabetic retinopathy, or retinal detachment;
• Best-corrected visual acuity (BCVA) score worse than 55 ETDRS letters (equivalent to approximately 0.60 logMAR, 20/80 Snellen, or 0.25 decimal);
• Other ocular pathology (including severe dry eye) that may, in the opinion of the Investigator, preclude the administration of a topical prostaglandin analogue or topical carbonic anhydrase inhibitor;
• Intraocular surgery within the past 6 months prior to the Screening Visit;
• Ocular laser surgery within the past 3 months prior to the Screening Visit;
• Any abnormality preventing reliable applanation tonometry;
• Any other conditions including severe illness which would make the subject, in the opinion of the Investigator, unsuitable for the study;
• History of hepatic or renal disease that would preclude the safe administration of a carbonic anhydrase inhibitor (CAI) in the opinion of the Investigator;
• Hypersensitivity to prostaglandin analogues, topical or oral CAIs, sulfonamide derivatives, or to any component of the study medications in the opinion of the Investigator;
• Recent (within 4 weeks of the Eligibility 1 Visit) use of high dose (> 1 g daily) salicylate therapy;
• Use of any additional topical or systemic ocular hypotensive medication during the study;
• Concurrent use of glucocorticoids administered by any route;
• Less than 30 days stable dosing regimen before the Screening Visit of any medications (excluding the IOP-lowering treatments) or substances administered by any route and used on a chronic basis that may affect IOP (ie, β adrenergic blocking agents);
• Therapy with another investigational agent within 30 days prior to the Screening Visit;
• Other protocol-specified exclusion criteria may apply.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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327 participants in 6 patient groups

TravA/Brinz

Experimental group

Description:

Dose Level A / Brinzolamide 1% ophthalmic suspension (fixed combination), 1 drop twice daily in the treated eye(s) morning and night, with travoprost solution vehicle, 1 drop once daily in the treated eye(s) at night, for 6 weeks

Treatment:

Drug: Travoprost solution vehicle

Drug: Dose Level A / Brinzolamide 1% ophthalmic suspension

TravB/Brinz

Experimental group

Description:

Dose Level B / Brinzolamide 1% ophthalmic suspension (fixed combination), 1 drop twice daily in the treated eye(s) morning and night, with travoprost solution vehicle, 1 drop once daily in the treated eye(s) at night, for 6 weeks

Treatment:

Drug: Travoprost solution vehicle

Drug: Dose Level B / Brinzolamide 1% ophthalmic suspension

TravC/Brinz

Experimental group

Description:

Dose Level C / Brinzolamide 1% ophthalmic suspension (fixed combination), 1 drop twice daily in the treated eye(s) morning and night, with travoprost solution vehicle, 1 drop once daily in the treated eye(s) at night, for 6 weeks

Treatment:

Drug: Travoprost solution vehicle

Drug: Dose Level C / Brinzolamide 1% ophthalmic suspension

AZOPT

Active Comparator group

Description:

Brinzolamide 1% ophthalmic suspension, 1 drop twice daily in the treated eye(s) morning and night, with travoprost solution vehicle, 1 drop once daily in the treated eye(s) at night for 6 weeks

Treatment:

Drug: Brinzolamide 1% ophthalmic suspension AZOPT®

Drug: Travoprost solution vehicle

TRAV Z

Active Comparator group

Description:

Brinzolamide suspension vehicle, 1 drop twice daily in the treated eye(s) morning and night, with travoprost 0.004% ophthalmic solution, 1 drop once daily in the treated eye(s) at night, for 6 weeks

Treatment:

Drug: Travoprost 0.004% ophthalmic solution TRAVATAN Z®

Drug: Brinzolamide suspension vehicle

TRAV Z + AZOPT

Active Comparator group

Description:

Brinzolamide 1% ophthalmic suspension, 1 drop twice daily in the treated eye(s) twice daily morning and night, with travoprost 0.004% ophthalmic solution, 1 drop once daily in the treated eye(s) at night, for 6 weeks

Treatment:

Drug: Brinzolamide 1% ophthalmic suspension AZOPT®

Drug: Travoprost 0.004% ophthalmic solution TRAVATAN Z®