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A Single-Center, Phase 2 Study Evaluating Bilastine Ophthalmic Solution in the CAC® Model

A Single-Center, Double-Masked, Randomized, Vehicle-Controlled, Phase 2, Dose Ranging Evaluation of the Effectiveness of Bilastine Ophthalmic Solution (0.2%, 0.4%, and 0.6%) Compared to Vehicle for the Treatment of Allergic Conjunctivitis in the Conjunctival Allergen Challenge (Ora-CAC®) Model

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03231969
Enrollment
121
Registered
2017-07-27
Start date
2017-07-20
Completion date
2017-10-11
Last updated
2023-03-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Allergic Conjunctivitis

Brief summary

To evaluate the efficacy of Bilastine Ophthalmic Solution (0.2%,0.4%,0.6%) compared to vehicle for the treatment of the signs and symptoms of allergic conjunctivitis

Interventions

DRUGBilastine 0.2%

1 drop in each eye at 3 separate times during a 25 day period.

DRUGBilastine 0.4%

1 drop in each eye at 3 separate times during a 25 day period.

DRUGBilastine 0.6%

1 drop in each eye at 3 separate times during a 25 day period.

DRUGBilastine 0%

1 drop in each eye at 3 separate times during a 25 day period.

Sponsors

ORA, Inc.
CollaboratorINDUSTRY
Faes Farma, S.A.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: * be at least 18 years old * be willing and able to avoid all disallowed medications and contact lenses * must have a pregnancy test if of childbearing potential * must be able to read an eye chart from 10 feet away Key

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 immunotherapy in the last 2 years * must not have used an investigational drug or device in the past 30 days or concurrently enrolled in another investigational trial

Design outcomes

Primary

MeasureTime frameDescription
Ocular ItchingThe outcome measure was assessed at Visit 4b (Day 1, 16h post treatment), Visit 5b (Day 15 ±3, 8h post treatment), and Visit 6 (Day 22 ±3, 15 minutes post treatment).The primary efficacy measure was ocular itching evaluated by the subject post-CAC (Conjunctival Allergen Challenge) at Visits 4b, 5b, and 6, using a 0 to 4 Ora Calibra scale: 0 = none (normal, no itching), 4 = incapacitating itch.

Countries

United States

Participant flow

Participants by arm

ArmCount
Bilastine 0.2%
Bilastine 0.2%: 1 drop in each eye at 3 separate times during a 25 day period.
30
Bilastine 0.4%
Bilastine 0.4%: 1 drop in each eye at 3 separate times during a 25 day period.
30
Bilastine 0.6%
Bilastine 0.6%: 1 drop in each eye at 3 separate times during a 25 day period.
31
Bilastine 0%
Bilastine 0%: 1 drop in each eye at 3 separate times during a 25 day period.
30
Total121

Baseline characteristics

CharacteristicBilastine 0.2%Bilastine 0.4%Bilastine 0.6%Bilastine 0%Total
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
2 Participants3 Participants4 Participants3 Participants12 Participants
Age, Categorical
Between 18 and 65 years
28 Participants27 Participants27 Participants27 Participants109 Participants
Age, Continuous50.4 years
STANDARD_DEVIATION 10.7
47.0 years
STANDARD_DEVIATION 13.95
51.8 years
STANDARD_DEVIATION 13.4
48.3 years
STANDARD_DEVIATION 13.24
49.4 years
STANDARD_DEVIATION 12.8
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants7 Participants4 Participants5 Participants19 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
27 Participants23 Participants27 Participants25 Participants102 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants
Ocular Itching- Baseline
Visit 4b: Pre- CAC
0.058 units on a scale
STANDARD_DEVIATION 0.2043
0.000 units on a scale
STANDARD_DEVIATION 0
0.048 units on a scale
STANDARD_DEVIATION 0.1981
0.025 units on a scale
STANDARD_DEVIATION 0.1006
0.03275 units on a scale
STANDARD_DEVIATION 0.12575
Ocular Itching- Baseline
Visit 5b: Pre- CAC
0.000 units on a scale
STANDARD_DEVIATION 0
0.000 units on a scale
STANDARD_DEVIATION 0
0.033 units on a scale
STANDARD_DEVIATION 0.1826
0.033 units on a scale
STANDARD_DEVIATION 0.1826
0.0165 units on a scale
STANDARD_DEVIATION 0.0913
Ocular Itching- Baseline
Visit 6: Pre- CAC
0.000 units on a scale
STANDARD_DEVIATION 0
0.000 units on a scale
STANDARD_DEVIATION 0
0.000 units on a scale
STANDARD_DEVIATION 0
0.000 units on a scale
STANDARD_DEVIATION 0
0.000 units on a scale
STANDARD_DEVIATION 0
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants1 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
Asian
1 Participants0 Participants1 Participants0 Participants2 Participants
Race (NIH/OMB)
Black or African American
1 Participants2 Participants4 Participants3 Participants10 Participants
Race (NIH/OMB)
More than one race
1 Participants0 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
27 Participants27 Participants26 Participants27 Participants107 Participants
Region of Enrollment
United States
30 participants30 participants31 participants30 participants121 participants
Sex: Female, Male
Female
16 Participants18 Participants15 Participants17 Participants66 Participants
Sex: Female, Male
Male
14 Participants12 Participants16 Participants13 Participants55 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
0 / 300 / 300 / 310 / 30
other
Total, other adverse events
8 / 303 / 301 / 317 / 30
serious
Total, serious adverse events
0 / 300 / 300 / 310 / 30

Outcome results

Primary

Ocular Itching

The primary efficacy measure was ocular itching evaluated by the subject post-CAC (Conjunctival Allergen Challenge) at Visits 4b, 5b, and 6, using a 0 to 4 Ora Calibra scale: 0 = none (normal, no itching), 4 = incapacitating itch.

Time frame: The outcome measure was assessed at Visit 4b (Day 1, 16h post treatment), Visit 5b (Day 15 ±3, 8h post treatment), and Visit 6 (Day 22 ±3, 15 minutes post treatment).

ArmMeasureGroupValue (MEAN)Dispersion
Bilastine 0.2%Ocular ItchingVisit 6: 3 minutes Post-CAC0.679 units on a scaleStandard Deviation 0.6662
Bilastine 0.2%Ocular ItchingVisit 5b: 7 minutes Post-CAC1.379 units on a scaleStandard Deviation 0.8573
Bilastine 0.2%Ocular ItchingVisit 6: 7 minutes Post-CAC1.000 units on a scaleStandard Deviation 0.7454
Bilastine 0.2%Ocular ItchingVisit 5b: 3 minutes Post-CAC1.397 units on a scaleStandard Deviation 1.105
Bilastine 0.2%Ocular ItchingVisit 4b: 7 minutes Post-CAC2.092 units on a scaleStandard Deviation 0.7698
Bilastine 0.2%Ocular ItchingVisit 4b: 5 minutes Post-CAC2.075 units on a scaleStandard Deviation 0.7828
Bilastine 0.2%Ocular ItchingVisit 6: 5 minutes Post-CAC0.920 units on a scaleStandard Deviation 0.7235
Bilastine 0.2%Ocular ItchingVisit 5b: 5 minutes Post-CAC1.466 units on a scaleStandard Deviation 0.93
Bilastine 0.2%Ocular ItchingVisit 4b: 3 minutes Post-CAC1.908 units on a scaleStandard Deviation 0.7809
Bilastine 0.4%Ocular ItchingVisit 5b: 5 minutes Post-CAC1.464 units on a scaleStandard Deviation 0.9592
Bilastine 0.4%Ocular ItchingVisit 6: 3 minutes Post-CAC0.732 units on a scaleStandard Deviation 0.9127
Bilastine 0.4%Ocular ItchingVisit 5b: 7 minutes Post-CAC1.518 units on a scaleStandard Deviation 1.034
Bilastine 0.4%Ocular ItchingVisit 4b: 5 minutes Post-CAC2.117 units on a scaleStandard Deviation 0.9531
Bilastine 0.4%Ocular ItchingVisit 4b: 3 minutes Post-CAC1.925 units on a scaleStandard Deviation 0.9449
Bilastine 0.4%Ocular ItchingVisit 4b: 7 minutes Post-CAC2.100 units on a scaleStandard Deviation 1.076
Bilastine 0.4%Ocular ItchingVisit 6: 7 minutes Post-CAC1.214 units on a scaleStandard Deviation 0.9421
Bilastine 0.4%Ocular ItchingVisit 6: 5 minutes Post-CAC1.143 units on a scaleStandard Deviation 0.9987
Bilastine 0.4%Ocular ItchingVisit 5b: 3 minutes Post-CAC1.250 units on a scaleStandard Deviation 0.8872
Bilastine 0.6%Ocular ItchingVisit 5b: 5 minutes Post-CAC0.817 units on a scaleStandard Deviation 1.0503
Bilastine 0.6%Ocular ItchingVisit 4b: 3 minutes Post-CAC1.177 units on a scaleStandard Deviation 1.0332
Bilastine 0.6%Ocular ItchingVisit 4b: 5 minutes Post-CAC1.218 units on a scaleStandard Deviation 1.1268
Bilastine 0.6%Ocular ItchingVisit 4b: 7 minutes Post-CAC1.218 units on a scaleStandard Deviation 1.1157
Bilastine 0.6%Ocular ItchingVisit 5b: 3 minutes Post-CAC0.708 units on a scaleStandard Deviation 0.8908
Bilastine 0.6%Ocular ItchingVisit 5b: 7 minutes Post-CAC0.742 units on a scaleStandard Deviation 0.9837
Bilastine 0.6%Ocular ItchingVisit 6: 3 minutes Post-CAC0.392 units on a scaleStandard Deviation 0.5749
Bilastine 0.6%Ocular ItchingVisit 6: 5 minutes Post-CAC0.558 units on a scaleStandard Deviation 0.6355
Bilastine 0.6%Ocular ItchingVisit 6: 7 minutes Post-CAC0.583 units on a scaleStandard Deviation 0.6706
Bilastine 0% (Vehicle)Ocular ItchingVisit 6: 3 minutes Post-CAC2.542 units on a scaleStandard Deviation 0.8384
Bilastine 0% (Vehicle)Ocular ItchingVisit 5b: 3 minutes Post-CAC2.558 units on a scaleStandard Deviation 0.8032
Bilastine 0% (Vehicle)Ocular ItchingVisit 4b: 7 minutes Post-CAC2.917 units on a scaleStandard Deviation 0.5884
Bilastine 0% (Vehicle)Ocular ItchingVisit 6: 7 minutes Post-CAC2.483 units on a scaleStandard Deviation 0.9024
Bilastine 0% (Vehicle)Ocular ItchingVisit 6: 5 minutes Post-CAC2.592 units on a scaleStandard Deviation 0.8343
Bilastine 0% (Vehicle)Ocular ItchingVisit 4b: 5 minutes Post-CAC3.017 units on a scaleStandard Deviation 0.5979
Bilastine 0% (Vehicle)Ocular ItchingVisit 5b: 7 minutes Post-CAC2.642 units on a scaleStandard Deviation 0.7704
Bilastine 0% (Vehicle)Ocular ItchingVisit 5b: 5 minutes Post-CAC2.642 units on a scaleStandard Deviation 0.7505
Bilastine 0% (Vehicle)Ocular ItchingVisit 4b: 3 minutes Post-CAC2.758 units on a scaleStandard Deviation 0.7146
Comparison: Treatment difference (95%CI): Bilastine 0.2% arm minus Bilastine 0% (Vehicle) arm at Visit 4b (including all time points).p-value: 0.000295% CI: [-1.203, -0.378]ANCOVA
Comparison: Treatment difference (95%CI): Bilastine 0.4% arm minus Bilastine 0% (Vehicle) arm at Visit 4b (including all time points).p-value: <0.000195% CI: [-1.263, -0.439]ANCOVA
Comparison: Treatment difference (95%CI): Bilastine 0.6% arm minus Bilastine 0% (Vehicle) arm at Visit 4b (including all time points).p-value: <0.000195% CI: [-1.954, -1.135]ANCOVA
Comparison: Treatment difference (95%CI): Bilastine 0.2% arm minus Bilastine 0% (Vehicle) arm at Visit 5b (including all time points).p-value: <0.000195% CI: [-1.639, -0.778]ANCOVA
Comparison: Treatment difference (95%CI): Bilastine 0.4% arm minus Bilastine 0% (Vehicle) arm at Visit 5b (including all time points).p-value: <0.000195% CI: [-1.679, -0.811]ANCOVA
Comparison: Treatment difference (95%CI): Bilastine 0.6% arm minus Bilastine 0% (Vehicle) arm at Visit 5b (including all time points).p-value: <0.000195% CI: [-2.273, -1.418]ANCOVA
Comparison: Treatment difference (95%CI): Bilastine 0.2% arm minus Bilastine 0% (Vehicle) arm at Visit 6 (including all time points).p-value: <0.000195% CI: [-2.08, -1.312]ANCOVA
Comparison: Treatment difference (95%CI): Bilastine 0.4% arm minus Bilastine 0% (Vehicle) arm at Visit 6 (including all time points).p-value: <0.000195% CI: [-2.001, -1.232]ANCOVA
Comparison: Treatment difference (95%CI): Bilastine 0.6% arm minus Bilastine 0% (Vehicle) arm at Visit 6 (including all time points).p-value: <0.000195% CI: [-2.387, -1.63]ANCOVA

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026