Clinical trial NCT00546286: A Study to Evaluate the Effectiveness of Cosopt® as First Line Therapy (MK-0507A-153)
Official title: A 12 Week, Open-Label, Study to Evaluate the Effectiveness of Dorzolamide-Timolol as First Line Therapy to Reduce Intraocular Pressure in Patients With Untreated Open Angle Glaucoma (OAG) or Ocular Hypertension (OH)
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE3
Conditions: Glaucoma
Ocular Hypertension
Lead sponsor: Merck Sharp & Dohme LLC
Sponsor class: INDUSTRY
First posted: 2007-10-18
Enrollment: 170
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NON_RANDOMIZED
Intervention model: SINGLE_GROUP
Primary purpose: TREATMENT

Brief summary: Evaluate the effectiveness of dorzolamide-timolol (Cosopt®) as first line therapy in reducing intraocular pressure in patients with untreated Open angle glaucoma (OAG) or Ocular hypertension (OH).


Eligibility criteria: Inclusion Criteria:

* Patient has been recently diagnosed and is presently untreated for Open-Angle Glaucoma Or Ocular Hypertension With An iop of at least 27 mmhg in at least one eye (patient's worse eye)
* Patient Already Diagnosed With Open-Angle Glaucoma Or Ocular Hypertension And Untreated For At Least 30 Days Are Eligible For The Study If They Have An Iop Of 27 Mmhg Or More In At Least One Eye

Exclusion Criteria:

* A History Of Any Illness That, In The Opinion Of The Investigator, Might Confound The Results Of The Study Or Pose Additional Risk By Administering Dorzolamide-Timolol (Cosopt®) Or Prostaglandins
* The Presence Of Any Fundus Pathology Likely To Change During The Study Or To Influence Iop (Background Of Diabetic Retinopathy Is Permitted)
* Any Contraindication To The Use Of Cosopt® Including: - Bronchospasm, Including Bronchial Asthma Or A History Of Bronchial Asthma Or Chronic Obstructive Pulmonary Disease. - Sinus Bradycardia, Second Or Third Degree Av Block, Cardiac Failure (Grade Iii And Iv), Cardiogenic Shock
* Patient On Oral Carbonic Anhydrase Inhibitor, Concomitant Systemic Or Dermatological Medication Known To Affect The Iop, E.G. Clonidine, Corticosteroids, Oral Beta-Blocking Agents
* Pregnant Woman Or A Woman Of Childbearing Potential Who Is Sexually Active And Not Using An Acceptable Method Of Contraception (For Ex: Oral Contraceptive, Diaphragm, Contraceptive Sponge, Intra-Uterine Device, Long-Acting Contraceptive Injections, Double-Barrier Methods) Beginning At Least 7 Days Prior To Treatment And Continuing At Least 14 Days After The Last Visit Or The Discontinuation Visit. (Women Who Are Postmenopausal Or Have Received A Hysterectomy Or Have Undergone Tubal Ligature Are Considered As Not Having Childbearing Potential.)
* Severe Renal Impairment (Serum Creatinine \> 150 umol/L Or Creatinine Clearance \< 30 ml/min)

Primary outcomes:
measure: Reduction in IOP 4 mmHg (or >= 20%) over a period of 6 or 12 weeks.
timeFrame: 6 to 12 weeks
Secondary outcomes:
Other outcomes:
Locations:
Study officials:
affiliation: Merck Sharp & Dohme LLC
name: Medical Monitor
role: STUDY_DIRECTOR
References:
citation: Crichton AC, Harasymowycz P, Hutnik CM, Behki R, Boucher S, Ibrahim F, Rifkind AW, Solomon L, Liao C, Bastien NR, Sampalis JS. Effectiveness of dorzolamide-timolol (COSOPT) in patients who were treatment naive for open-angle glaucoma or ocular hypertension: the COSOPT first-line study. J Ocul Pharmacol Ther. 2010 Oct;26(5):503-11. doi: 10.1089/jop.2010.0032.