Title

A Study of the Response to AG-86893 in Patients With Pterygium Hyperemia
A Multicenter, Prospective, Randomized, Double-Masked, Phase 2 Study Evaluating the Safety, Tolerability, and Efficacy of Topical AG-86893 in Patients With Pterygium
  • Phase

    Phase 2
  • Study Type

    Interventional
  • Study Participants

    64
A pterygium is a wing-shaped, benign tissue growth which forms on the surface of the conjunctiva and grows towards the cornea. It can eventually lead to vision impairment. The precise cause of pterygium formation is unknown but new blood vessel growth and fibroblastic structures are characteristics of the disease. AG-86893 is an eye drop being developed to treat hyperemia (redness) and growth of the pterygium.

Hypothesis

AG-86893 dosed three times daily for 28 consecutive days has an acceptable safety profile as measured by the incidence and severity of adverse events (AEs) compared with vehicle
At least 1 concentration of AG-86893 is effective, as measured by the mean change from baseline in conjunctival hyperemia (redness), compared with vehicle
Study Started
Oct 11
2018
Primary Completion
Sep 05
2019
Study Completion
Oct 25
2019
Results Posted
Nov 06
2020
Last Update
Nov 06
2020

Drug 0.1% AG-86893 Eye Drops

One drop, three times daily to the study eye for 28 days

Drug 0.3% AG-86893 Eye Drops

One drop, three times daily to the study eye for 28 days

Drug Vehicle Eye Drops

One drop, three times daily to the study eye for 28 days

Vehicle Eye Drops Placebo Comparator

One drop, three times daily to the study eye for 28 days

0.1% AG-86893 Eye Drops Experimental

One drop, three times daily to the study eye for 28 days

0.3% AG-86893 Eye Drops Experimental

One drop, three times daily to the study eye for 28 days

Criteria

Inclusion Criteria:

Good health with no clinically significant findings based on the medical history, electrocardiogram, vital signs, blood chemistry, hematology, and urinalysis findings, as determined by the investigator
Females of childbearing potential must have a negative pregnancy test at baseline and must be on established, adequate contraception and males must use condoms if their partner is of childbearing potential and their female partner should also use an additional effective means of contraception, or they must agree to abstain from sexual intercourse with a female partner for the duration of the study; contraception should be continued for 3 months after the last dose.
Presence of pterygium with associated conjunctival hyperemia (redness) of grade ≥2 as assessed by a central reading center.

Exclusion Criteria:

History or presence of any ocular diseases other than pterygium or its sequelae (after-effects), including neoplasia (uncontrolled overgrowth)
Diagnosis of ocular hypertension or glaucoma requiring use of intraocular pressure-lowering medication
Use of contact lenses during the study in the study eye
History or evidence of ocular surgeries in the study eye at any time
History of liver dysfunction or current abnormal liver enzymes
Pregnancy, plans for pregnancy, or breastfeeding during the study

Summary

Vehicle Eye Drops

0.1% AG-86893 Eye Drops

0.3% AG-86893 Eye Drops

All Events

Event Type Organ System Event Term Vehicle Eye Drops 0.1% AG-86893 Eye Drops 0.3% AG-86893 Eye Drops

Change From Baseline in Overall Conjunctival Hyperemia Score

Assessed by digital ocular photography; each quadrant of the eye (superior, inferior, nasal, temporal) will be scored using a 5-point scale (0 = none, 1 = mild, 2 = moderate, 3 = severe, and 4 = very severe) and graded by a reading center. The overall conjunctival score is the average of the four quadrants. Assessments are made by subtracting the score at Baseline from the score on Day 28. An increase in value indicates worsening of hyperemia, while a decrease indicates improvement.

Vehicle Eye Drops

-0.056
score on a scale (Least Squares Mean)
Standard Error: 0.120

0.1% AG-86893 Eye Drops

-0.33
score on a scale (Least Squares Mean)
Standard Error: 0.109

0.3% AG-86893 Eye Drops

-0.352
score on a scale (Least Squares Mean)
Standard Error: 0.109

Change From Baseline in Conjunctival Hyperemia Score in the Quadrant With the Pterygium

Assessed by digital ocular photography; the quadrant with the pterygium will be scored using a 5-point scale (0 = none, 1 = mild, 2 = moderate, 3 = severe, and 4 = very severe) and graded by a reading center. Assessments are made by subtracting the score at Baseline from the score on Day 28. An increase in value indicates worsening of hyperemia, while a decrease indicates improvement.

Vehicle Eye Drops

-0.111
score on a scale (Least Squares Mean)
Standard Error: 0.153

0.1% AG-86893 Eye Drops

-0.429
score on a scale (Least Squares Mean)
Standard Error: 0.142

0.3% AG-86893 Eye Drops

-0.5
score on a scale (Least Squares Mean)
Standard Error: 0.138

Percent of Patients With a 1-point Decrease in Hyperemia Score in the Quadrant With the Pterygium

Assessed by digital ocular photography; the quadrant with the pterygium will be scored using a 5-point scale and graded by a reading center. A 1-point reduction in hyperemia score is considered clinically meaningful.

Vehicle Eye Drops

0.1% AG-86893 Eye Drops

0.3% AG-86893 Eye Drops

Total

64
Participants

Age, Continuous

51.2
years (Mean)
Standard Deviation: 11.8

Race (NIH/OMB)

Region of Enrollment

Sex: Female, Male

Overall Study

Vehicle Eye Drops

0.1% AG-86893 Eye Drops

0.3% AG-86893 Eye Drops