Phase IV Randomised Double-masked Clinical Trial: Assessing Morning Versus Evening Dosing of a Fixed Dose Combination of Travoprost 0.004% / Timolol Maleate 0.5% in Patients With Primary Open-angle Glaucoma or Ocular Hypertension

The purpose of this study is to assess the IOP-lowering efficacy of a combination of Travoprost / Timolol maleate, dosed in the morning or in the evening, in patients with open-angle glaucoma or ocular hypertension, who have an insufficiently controlled IOP (mmHg), and are using prostaglandin analogue monotherapy.

Study Overview

• Status: Completed
• Conditions: Ocular Hypertension; Open-angle Glaucoma
• Intervention / Treatment: Drug: Travoprost 0.004% / Timolol maleate 0.5%; Drug: Travoprost 0.004% / Timolol maleate 0.5%

• Study Type: Interventional
• Enrollment (Actual): 36
• Phase: Phase 4

Contacts and Locations

Study Locations

• United Kingdom
  • London, United Kingdom, NW1 5YE
    • Western Eye Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion:

• Male or female adult patients over the age of 18 years
• Current treatment with prostaglandin analogue monotherapy, IOP-lowering medication.

• Meet the following IOP entry criteria in at least one treated eye (mean IOP):

  • ≥ 19 mmHg
  • ≤ 28 mmHg
• The patient is willing and able to sign and date the Informed Consent Form. Patients who wear contact lenses will be able to participate in the study, provided that the contact lenses are removed before instillation of study medication, and that the patient agrees to wait a minimum of 15 minutes, before re-inserting the lenses.

Exclusion:

• Females of childbearing potential (i.e. - those who are not surgically sterilised at least three months prior to the study start, or are not at least one year post-menopausal), who are:

  • Currently pregnant
  • Have a positive result on a urine pregnancy test at the Eligibility Visit
  • Intend to become pregnant during the study period
  • Are breast-feeding
  • Are not using highly effective birth control measures, for example;
• Hormonal - oral, implanted, or injected contraceptives or;
• Mechanical - spermicide in conjunction with a barrier such a condom or diaphragm or;
• Intra-Uterine Device (IUD)
• Any form of glaucoma other than open-angle glaucoma (with or without a pigment dispersion or pseudo-exfoliation component).
• Current or previous therapy with another investigational agent, within 30 days prior to study entry.
• History of chronic or recurrent severe inflammatory eye disease (e.g., scleritis, uveitis, herpes keratitis), in either eye.
• History of ocular trauma within the past six months in either eye
• History of ocular infection or ocular inflammation within the past three months in either eye.
• History of clinically significant or progressive retinal disease such as retinal degeneration, diabetic retinopathy, or retinal detachment in either eye.
• History of any other severe ocular pathology (including severe dry eyes), in either eye that would preclude the administration of a topical prostaglandin analogue.
• Intraocular surgery within the past six months as determined by patient history and/or examination in either eye.
• Ocular laser surgery within the past three months as determined by patient history and/or examination in either eye.
• Any abnormality preventing reliable applanation tonometry of either eye.
• Angle grade less than Grade 2 in either eye, as measured by gonioscopy (extreme narrow angle with complete or partial closure), assessed within the previous 12 months.
• Cup/disc ratio greater than 0.80 in either eye, assessed within the previous six months.
• Severe central visual field loss in either eye, defined as a sensitivity of ≤ 10 bB in at least two of the four visual field test points, closest to the point of fixation, assessed within the previous six months.
• Unable to safely discontinue all IOP lowering medication, for a minimum period of 28 days prior to Baseline Visit.
• Unable to safely discontinue all glucocorticoid medications administered by any route. Before the Eligibility Visit, patients must have performed a Wash Out of at least four weeks for any intermittent glucocorticoid medications and must be able to remain off these medications for the duration of the study.
• Use of any additional topical or systemic ocular hyposensitive medication during the study.
• History of bronchial asthma, or severe chronic obstructive pulmonary disease that would preclude the safe administration of a topical beta-blocker.

• Less than 30 days stable dosing regimen before the Screening Visit of any non-glaucoma medications or substances administered by any route and used on a chronic basis that may affect IOP. These may include, but are not limited to the following:

  • Sympathomimetic agents
  • Antimuscarinic agents
  • Antihistamines
  • Phenothiazines
  • Tricyclic antidepressants
  • Beta-antagonist blocking agents
  • Alpha agonists
  • Alpha-adrenergic blocking agents
  • Calcium channel blockers
  • Angiotensin converting enzyme inhibitors
  • Cardiac gylcosides
• History or other evidence of severe illness or any other conditions which would make the patient, in the opinion of the investigator, unsuitable for the study.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Quadruple

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: 1; One drop of Travoprost 0.004% / Timolol maleate 0.5% in each eye at 9 am and 1 drop of Timolol vehicle as placebo in each eye at 9 pm for 12 weeks.	Drug: Travoprost 0.004% / Timolol maleate 0.5%; Solution, morning dosing; Drug: Travoprost 0.004% / Timolol maleate 0.5%; Solution, evening dosing
Experimental: 2; One drop of Timolol vehicle as placebo in each eye at 9 am and one drop of Travoprost 0.004% / Timolol maleate 0.5% in each eye at 9 pm for 12 weeks.	Drug: Travoprost 0.004% / Timolol maleate 0.5%; Solution, morning dosing; Drug: Travoprost 0.004% / Timolol maleate 0.5%; Solution, evening dosing

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Reduction in intraocular pressure	week 4, week 12

Secondary Outcome Measures

Outcome Measure	Time Frame
Adverse events	Week 4, week 12

Collaborators and Investigators

• Sponsor: Alcon Research

Publications and helpful links

Helpful Links

• Results on European Database

Study record dates

Study Major Dates

• Study Start: September 1, 2008
• Primary Completion (Actual): January 1, 2011
• Study Completion (Actual): January 1, 2011

Study Registration Dates

• First Submitted: September 24, 2008
• First Submitted That Met QC Criteria: September 24, 2008
• First Posted (Estimate): September 25, 2008

Study Record Updates

• Last Update Posted (Estimate): November 22, 2016
• Last Update Submitted That Met QC Criteria: November 18, 2016
• Last Verified: January 1, 2012

More Information

Terms related to this study

• Keywords: Open-angle glaucoma (with or without pseudoexfoliation or pigment dispersion component), or ocular hypertension
• Additional Relevant MeSH Terms: Cardiovascular Diseases; Vascular Diseases; Eye Diseases; Glaucoma; Glaucoma, Open-Angle; Ocular Hypertension; Hypertension; Physiological Effects of Drugs; Adrenergic beta-Antagonists; Adrenergic Antagonists; Adrenergic Agents; Neurotransmitter Agents; Molecular Mechanisms of Pharmacological Action; Anti-Arrhythmia Agents; Antihypertensive Agents; Enzyme Inhibitors; Timolol; Maleic acid; Travoprost
• Other Study ID Numbers: EMD-06-02

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No