A Clinical Trial on Safety and Efficacy of CBT-001 in Patients With Pterygium

NCT ID: NCT05456425

Last Updated: 2025-09-24

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE3

Total Enrollment

660 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-06-30

Study Completion Date

2027-12-31

Brief Summary

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The objective is to evaluate the safety and efficacy of low dose and high dose CBT-001 eye drop dosed twice daily for 24 months compared to vehicle in reducing conjunctival hyperemia and preventing pterygium progression in eyes with pterygia.

Detailed Description

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Clinical Hypotheses:

1. CBT-001 dosed twice daily is more effective than vehicle in:

* Reducing conjunctival hyperemia by demonstrating a statistically significant difference and clinically relevant improvement in the mean severity grade change from baseline.
* Preventing pterygium progression, by demonstrating a statistically significant and clinically relevant improvement on drug vs vehicle mean difference in the change in pterygium length from baseline.
2. CBT-001 dosed twice daily maintains the above efficacies and has an acceptable ocular and systemic safety and tolerability profile when administered topically.

Conditions

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Pterygium

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Multicenter, Double-Masked, Randomized, Vehicle-Controlled Parallel Comparison with dosing twice-daily in eye(s) with pterygium
Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Vehicle

Emulsion eye drop without drug

Group Type PLACEBO_COMPARATOR

Vehicle

Intervention Type DRUG

Formulation without drug

CBT-001 Low Dose

CBT-001 eye drop

Group Type EXPERIMENTAL

CBT-001

Intervention Type DRUG

CBT-001 eye drop

CBT-001 High Dose

CBT-001 eye drop

Group Type EXPERIMENTAL

CBT-001

Intervention Type DRUG

CBT-001 eye drop

Interventions

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CBT-001

CBT-001 eye drop

Intervention Type DRUG

Vehicle

Formulation without drug

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

Pterygium with conjunctival hyperemia

Exclusion Criteria

Pterygium removal within the last 6 months
Minimum Eligible Age

12 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Cloudbreak Therapeutics, LLC

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Trinity Research Group

Dothan, Alabama, United States

Site Status

Horizon Eye Specialists & LASIK Center

Sun City, Arizona, United States

Site Status

West Coast Eye Institute

Bakersfield, California, United States

Site Status

Global Research Mangement

Glendale, California, United States

Site Status

Inland Eye Specialists

Hemet, California, United States

Site Status

Eye Research Foundation

Newport Beach, California, United States

Site Status

Shultz Chang Vision

Northridge, California, United States

Site Status

North Bay Eye Associates INC

Petaluma, California, United States

Site Status

Santa Barbara Eye Care

Santa Barbara, California, United States

Site Status

Advanced Research; LLC

Deerfield Beach, Florida, United States

Site Status

Bruce A. Segal, MD

Delray Beach, Florida, United States

Site Status

International Research Center

Tampa, Florida, United States

Site Status

The Eye Care Institute

Louisville, Kentucky, United States

Site Status

Center for Sight

Henderson, Nevada, United States

Site Status

Vance Thompson Vision

Sioux Falls, South Dakota, United States

Site Status

Baylor College of Medicine

Houston, Texas, United States

Site Status

DCT-Shah Research, LLC dba Discovery Clinical Trials

McAllen, Texas, United States

Site Status

Clinical Trials of Texas

San Antonio, Texas, United States

Site Status

R and R Eye Research

San Antonio, Texas, United States

Site Status

Emerson Clinical Research Institute, LLC

Falls Church, Virginia, United States

Site Status

The Centre for Eye Research Australia

East Melbourne, Melbourne, Australia

Site Status

Eyeclinic Albury Wodonga

Albury, New South Wales, Australia

Site Status

Sydney Eye Hospital

Sydney, New South Wales, Australia

Site Status

Bendigo Eye Clinic

Bendigo, Victoria, Australia

Site Status

Sunshine Eye Surgeons

St Albans, Victoria, Australia

Site Status

Beijing Tongren Hospital; CMU

Beijing, , China

Site Status

West China Hospital of Sichuan University

Chengdu, , China

Site Status

Hainan Provincial Eye Hospital

Haikou, , China

Site Status

1st Affiliated Hospital of University of South China

Hengyang, , China

Site Status

The Second People's Hospital of Yunnan Province

Kunming, , China

Site Status

The First Affiliated Hospital of NC University

Nanchang, , China

Site Status

Eye Hospital of Shandong First Medical University

Qingdao, , China

Site Status

Eye Hospital of Wenzhou Medical University

Wenzhou, , China

Site Status

Union Hospital Tongji Medical College

Wuhan, , China

Site Status

Xiamen Eye Center of Xiamen University

Xiamen, , China

Site Status

Advanced Eye Centre PGIMER

Chandigarh, Chandigarh, India

Site Status

Netralaya Super Specialty Eye Hospital

Ahmedabad, Gujarat, India

Site Status

Narayana Nethralaya

Bangalore, Karnataka, India

Site Status

L V Prasad Eye Institute

Bhubaneswar, Odisha, India

Site Status

SP Medical College and AG of Hospitals

Bikaner, Rajasthan, India

Site Status

Icare Eye Hospital

Noida, Uttar Pradesh, India

Site Status

Auckland Eye

Auckland, , New Zealand

Site Status

Eye Institute

Auckland, , New Zealand

Site Status

Southern Eye Specialists

Christchurch, , New Zealand

Site Status

Countries

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United States Australia China India New Zealand

Other Identifiers

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CBT-CS301

Identifier Type: -

Identifier Source: org_study_id

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