Title

A Single-Center Evaluation of the Relative Efficacy of EM-100 Compared to Zaditor® (Ketotifen Fumarate Ophthalmic Solution 0.035%) and Vehicle
A Single-Center Evaluation of the Relative Efficacy of EM-100 Compared to Zaditor® (Ketotifen Fumarate Ophthalmic Solution 0.035%) and Vehicle in the Treatment of Ocular Itching Associated With Allergic Conjunctivitis as Induced by the Conjunctival Allergen Challenge Model (Ora-CAC®)
  • Phase

    Phase 3
  • Study Type

    Interventional
  • Study Participants

    65
A Single-Center study to demonstrate the non-inferiority of EM-100 to Zaditor® in the treatment of ocular itching.
Study Started
Apr 07
2018
Primary Completion
Apr 29
2018
Study Completion
Apr 29
2018
Results Posted
May 17
2021
Last Update
Jun 08
2023

Drug EM-100

Subjects will receive one drop in one eye only based on the randomization list, one time over the course of the trial.

Drug Zaditor®

Subjects will receive one drop in one eye only based on the randomization list, one time over the course of the trial.

Drug Vehicle

Subjects will receive one drop in one eye only based on the randomization list, one time over the course of the trial.

EM-100 Experimental

One drop of EM-100 in either the right or left eye once on Day 1.

Zaditor® Experimental

One drop of Zaditor® in either the right or left eye once on Day 1.

Vehicle Experimental

One drop of Vehicle in either the right or left eye once on Day 1.

Criteria

Inclusion Criteria:

be at least 18 years old
have a positive history of allergic conjunctivitis and positive skin test reaction to allergens
be willing to avoid disallowed medications for the appropriate washout period and throughout the trial
be willing to avoid contact lens use
be willing to have a pregnancy test
must be able to read an eye chart from 10 feet away

Exclusion Criteria:

must not have any allergies to the study medications
must not have any ocular or non ocular condition that investigator feels will interfere with study parameters
must not have used an investigational drug or device in the past 30 days or currently be enrolled in another investigational trial

Summary

Overall Participants

All Events

Event Type Organ System Event Term

Ocular Itching

Ocular itching scores were self-assessed by the participant using a 5-point scale with 0.5 unit increments, wherein 0 = None (normal, no itching), 1.0 = Intermittent tickle sensation involving more than just the corner of the eye, 2.0 = Mild continuous itch without desire to rub, 3.0 = Severe itch with desire to rub, and 4.0 = Incapacitating itch with irresistible urge to rub.

EM-100

3 minutes post CAC

0.81
score on a scale (Mean)
Standard Deviation: 0.787

5 minutes post CAC

1.09
score on a scale (Mean)
Standard Deviation: 1.047

7 minutes post CAC

1.17
score on a scale (Mean)
Standard Deviation: 1.103

EM-100

3 minutes post CAC

0.81
score on a scale (Mean)
Standard Deviation: 0.787

5 minutes post CAC

1.09
score on a scale (Mean)
Standard Deviation: 1.047

7 minutes post CAC

1.17
score on a scale (Mean)
Standard Deviation: 1.103

EM-100

3 minutes post CAC

0.81
score on a scale (Mean)
Standard Deviation: 0.787

5 minutes post CAC

1.09
score on a scale (Mean)
Standard Deviation: 1.047

7 minutes post CAC

1.17
score on a scale (Mean)
Standard Deviation: 1.103

Zaditor®

3 minutes post CAC

0.79
score on a scale (Mean)
Standard Deviation: 0.750

5 minutes post CAC

1.04
score on a scale (Mean)
Standard Deviation: 0.989

7 minutes post CAC

1.04
score on a scale (Mean)
Standard Deviation: 1.047

Zaditor®

3 minutes post CAC

0.79
score on a scale (Mean)
Standard Deviation: 0.750

5 minutes post CAC

1.04
score on a scale (Mean)
Standard Deviation: 0.989

7 minutes post CAC

1.04
score on a scale (Mean)
Standard Deviation: 1.047

Zaditor®

3 minutes post CAC

0.79
score on a scale (Mean)
Standard Deviation: 0.750

5 minutes post CAC

1.04
score on a scale (Mean)
Standard Deviation: 0.989

7 minutes post CAC

1.04
score on a scale (Mean)
Standard Deviation: 1.047

Vehicle

3 minutes post CAC

1.98
score on a scale (Mean)
Standard Deviation: 0.935

5 minutes post CAC

2.17
score on a scale (Mean)
Standard Deviation: 1.00

7 minutes post CAC

2.22
score on a scale (Mean)
Standard Deviation: 1.032

Vehicle

3 minutes post CAC

1.98
score on a scale (Mean)
Standard Deviation: 0.935

5 minutes post CAC

2.17
score on a scale (Mean)
Standard Deviation: 1.00

7 minutes post CAC

2.22
score on a scale (Mean)
Standard Deviation: 1.032

Vehicle

3 minutes post CAC

1.98
score on a scale (Mean)
Standard Deviation: 0.935

5 minutes post CAC

2.17
score on a scale (Mean)
Standard Deviation: 1.00

7 minutes post CAC

2.22
score on a scale (Mean)
Standard Deviation: 1.032

Conjunctival Redness

The investigator assessed conjunctival redness scores using a 5-point scale with 0.5 unit increments, wherein 0 = None (normal, no dilated blood vessels), 1 = Mild (slightly dilated blood vessels: pink color; can be quadrantal), 2 = Moderate (more apparent dilation, with redder color, involving majority of the vessel bed), 3 = Severe (numerous and obvious dilated blood vessels, with deep red color and no color, or less red with chemosis), and 4 = Extremely Severe (large, numerous, dilated blood vessels characterized by unusually severe deep red color regardless of chemosis and involving the entire vessel bed).

EM-100

15 minutes post-CAC

2.25
score on a scale (Mean)
Standard Deviation: 0.783

20 minutes post-CAC

2.16
score on a scale (Mean)
Standard Deviation: 0.857

7 minutes post-CAC

2.13
score on a scale (Mean)
Standard Deviation: 0.824

Zaditor®

15 minutes post-CAC

2.29
score on a scale (Mean)
Standard Deviation: 0.737

20 minutes post-CAC

2.24
score on a scale (Mean)
Standard Deviation: 0.704

7 minutes post-CAC

2.14
score on a scale (Mean)
Standard Deviation: 0.743

Vehicle

15 minutes post-CAC

2.61
score on a scale (Mean)
Standard Deviation: 0.847

20 minutes post-CAC

2.46
score on a scale (Mean)
Standard Deviation: 0.784

7 minutes post-CAC

2.72
score on a scale (Mean)
Standard Deviation: 0.725

Age, Continuous

44.4
years (Mean)
Standard Deviation: 12.16

Iris color

Race (NIH/OMB)

Sex: Female, Male

Overall Study

EM-100

Zaditor®

Vehicle