Clin Ophthalmol. 2017 Jun 08;11:1089-1097. doi: 10.2147/OPTH.S131830. eCollection 2017.
Pooled analysis of two studies evaluating efficacy and safety of olopatadine hydrochloride 0.77% in patients with allergic conjunctivitis.
Clinical ophthalmology (Auckland, N.Z.)
Eugene McLaurin, Mark Bergmann, Abhijit Narvekar, Adeniyi Adewale, Paul Gomes, Gail Torkildsen
Affiliations
Affiliations
- Department of Ophthalmology, Total Eye Care, PA, Memphis, TN.
- Department of Ophthalmology, Apex Eye, Cincinnati, OH.
- Department of Ophthalmology, Alcon Research Ltd, Fort Worth, TX.
- Department of Ophthalmology, Ora Inc.
- Department of Ophthalmology, Andover Eye Associates, Andover, MA, USA.
PMID: 28652694
PMCID: PMC5472412 DOI: 10.2147/OPTH.S131830
Abstract
PURPOSE: Two individual phase 3 conjunctival allergen challenge (CAC) studies of similar design have assessed the efficacy and safety of olopatadine hydrochloride (HCl) 0.77% for the treatment of allergic conjunctivitis. The purpose of this study is to evaluate the integrated efficacy and safety of olopatadine HCl 0.77% from a larger dataset by pooling data from the two individual CAC studies.
METHODS: Data were pooled from two phase 3, randomized, multicenter, double-masked, active- and vehicle-controlled CAC studies. The primary comparison was on ocular itching scores between olopatadine HCl 0.77% versus vehicle (at onset and 24 hours) and olopatadine HCl 0.77% versus olopatadine 0.2% (at 24 hours). Additional end points included conjunctival redness, total redness, and proportion of itching responders at onset and 24-hour duration of CAC. For both primary and secondary analysis, mixed model repeated measures analysis was used, except for proportion of ocular itching responders. Sensitivity analyses were carried out using a two-sample
RESULTS: This analysis included 448 patients. Olopatadine HCl 0.77% was superior to vehicle (
CONCLUSION: This analysis confirms the findings from the individual studies. The rapid onset and prolonged duration of action (for 24 hours) of olopatadine HCl 0.77% supports once-daily dosing in the treatment of allergic conjunctivitis.
Keywords: allergic conjunctivitis; conjunctival allergen challenge; conjunctival redness; ocular itching; olopatadine
Conflict of interest statement
Disclosure Eugene McLaurin has received research grants from the following companies: Aciex, Acucela, Alcon Research Ltd., Allergan, AstraZeneca, Bausch & Lomb, Inotek Pharma, InSite Vision, Lexicon P
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