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Safety, Efficacy and Pharmacokinetics of CBT-008 in Patients With Meibomian Gland Dysfunction

A Phase 2 Multicenter, Double-masked, Randomized, Vehicle-controlled, Parallel Study to Evaluate the Safety, Efficacy and Pharmacokinetics of CBT-008 in Patients With Meibomian Gland Dysfunction

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05261386
Enrollment
95
Registered
2022-03-02
Start date
2022-03-04
Completion date
2023-03-29
Last updated
2024-04-24

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

Conditions

Meibomian Gland Dysfunction

Brief summary

Study Design Structure: Multicenter, randomized, double-masked, vehicle-controlled, parallel group study Duration: 1 month of TID treatment Treatment Groups, Dosing, and Treatment Regimen Study Treatment: CBT-008 topical ophthalmic solution Control Treatment: CBT-008 vehicle

Detailed description

Structure Multicenter, randomized, double-masked, vehicle-controlled, parallel group study. Duration Stage 1: 1 month Stage 2: 1 day (1 dose) Treatment Groups, Dosing, and Treatment Regimen 1. Study Treatment Stage 1: CBT-008 ophthalmic solution was administered as 1 drop OU TID Stage 2: CBT-008 ophthalmic solution was administered as 1 drop in the study eye 2. Control Treatment CBT-008 vehicle 3. Methods for Masking Study medication will be packaged in identical kits and will be labeled with medication kit numbers. The central randomization system will provide the site with a specific medication kit number for the patient corresponding to the treatment group assigned. 4. Instructions for Storage, Use, and Administration Study medication will be supplied as preservative free-unit dose containers, where 1 mL of CBT-008 ophthalmic solution will be aseptically filled into 3 mL Low Density Polyethylene (LDPE) ophthalmic dropper bottles. Study medication should be stored at room temperature in a secure area at clinical sites and dispensed only to patients enrolled into the clinical study. Patients will be instructed to store study medication in a cool place at room temperature at home. Study medication will be administered TID, one drop, to both eyes. First instillation of study medication on the first day will be applied by subject or care provider with site staff's observation for training and supervision. During the rest of the study treatment, patients will self-administer the medication TID for 1 month.

Interventions

DRUGCBT-008

Treat MGD

Sponsors

Cloudbreak Therapeutics, LLC
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 80 Years
Healthy volunteers
Yes

Inclusion criteria

Stage 1 inclusion criteria * • Diagnosed with MGD in both eyes and meet the following: 1. Ocular discomfort Score (ODS) ≥ 2 (No discomfort = 0, slight discomfort = 1, mild discomfort = 2, moderate discomfort = 3, severe discomfort = 4) 2. Visual Analog Scale (VAS) level is 35-90% for at least 1 of the 7 categories 3. Total Cornea staining grade ≥ 3 (NEI scheme with max score = 15) 4. Total meibum quality score (MQS) is between 6-17 from the sum of the 6 lower eyelid central glands in at least one lower eyelid (0-3 scale with max total = 18). 5. TBUT ≤ 5 s 6. Schirmer I Test (anaesthetized) ≥ 5 mm/5 min in study eye 7. BCVA LogMAR ≥ +0.7 in each eye * All patients of both genders ≥ 18 years * Willing to withhold the use of artificial tears and lubricants during the treatment phase; * Able to provide written informed consent and comply with study assessments for the full duration of the study. Stage 2 inclusion criteria 1. Patients who completed the Stage 1 Exit Visit for at least 1 month or healthy volunteers 2. At least 18 years of age at time of consent and able to provide written informed consent

Exclusion criteria

Stage 1

Design outcomes

Primary

MeasureTime frameDescription
IOP Related to Safety4 weeksIntraocular Pressure for study eye

Countries

United States

Participant flow

Participants by arm

ArmCount
CBT-008 Vehicle
Vehicle CBT-008: ophthalmic solution
32
CBT-008 Lower Concentration Ophthalmic Solution
lower concentration dose CBT-008: ophthalmic solution
31
CBT-008 Higher Concentration Ophthalmic Solution
higher concentration dose CBT-008: ophthalmic solution
32
Total95

Baseline characteristics

CharacteristicCBT-008 VehicleTotalCBT-008 Higher Concentration Ophthalmic SolutionCBT-008 Lower Concentration Ophthalmic Solution
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
9 Participants34 Participants13 Participants12 Participants
Age, Categorical
Between 18 and 65 years
23 Participants61 Participants19 Participants19 Participants
Age, Continuous56.5 years
STANDARD_DEVIATION 15.67
60.2 years
STANDARD_DEVIATION 13.7
62.6 years
STANDARD_DEVIATION 13.8
61.5 years
STANDARD_DEVIATION 10.75
Ethnicity (NIH/OMB)
Hispanic or Latino
8 Participants20 Participants4 Participants8 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
24 Participants75 Participants28 Participants23 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants
Intraocular Pressure of study eye related to safety15.844 mmHg
STANDARD_DEVIATION 2.9415
16.098 mmHg16.078 mmHg
STANDARD_DEVIATION 2.3352
16.371 mmHg
STANDARD_DEVIATION 2.1015
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
6 Participants18 Participants7 Participants5 Participants
Race (NIH/OMB)
Black or African American
6 Participants17 Participants6 Participants5 Participants
Race (NIH/OMB)
More than one race
1 Participants1 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants1 Participants0 Participants1 Participants
Race (NIH/OMB)
White
19 Participants58 Participants19 Participants20 Participants
Region of Enrollment
United States
32 participants95 participants32 participants31 participants
Sex: Female, Male
Female
25 Participants65 Participants23 Participants17 Participants
Sex: Female, Male
Male
7 Participants30 Participants9 Participants14 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 320 / 310 / 32
other
Total, other adverse events
3 / 325 / 318 / 32
serious
Total, serious adverse events
0 / 320 / 310 / 32

Outcome results

Primary

IOP Related to Safety

Intraocular Pressure for study eye

Time frame: 4 weeks

Population: Safety Population Study eye

ArmMeasureValue (MEAN)Dispersion
CBT-008 Ophthalmic SolutionIOP Related to Safety15.906 mmHgStandard Deviation 3.086
CBT-008 Lower ConcentrationIOP Related to Safety16.452 mmHgStandard Deviation 2.6999
CBT-008 Higher ConcentrationIOP Related to Safety16.469 mmHgStandard Deviation 2.2823

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