Study to Evaluate Suprachoroidally Administered CLS-AX in the Treatment of Neovascular Age-Related Macular Degeneration

NCT ID: NCT05891548

Last Updated: 2025-07-25

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

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

60 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-05-31

Study Completion Date

2024-08-20

Brief Summary

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Phase 2b, randomized, double-masked, parallel-group, active-controlled, multicenter, 36-week study designed to assess the safety and efficacy of suprachoroidally administered CLS-AX 1.0 mg with a flexible dosing regimen in participants with neovascular age-related macular degeneration previously treated with intravitreal anti-vascular endothelial growth factor (VEGF) standard of care therapy. Only one eye will be chosen as the study eye.

Detailed Description

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Phase 2b, randomized, double-masked, parallel-group, active-controlled, multicenter, 36-week study designed to assess the safety and efficacy of suprachoroidally administered CLS-AX 1.0 mg with a flexible dosing regimen in participants with neovascular age-related macular degeneration previously treated with intravitreal anti-VEGF standard of care therapy. Active-control will be 2 mg intravitreal injections of aflibercept dosed per the EYLEA Prescribing Information. Only one eye will be chosen as the study eye.

Conditions

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Neovascular Age-related Macular Degeneration

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Participants are randomly assigned to one of two treatment groups in parallel for the duration of the study.
Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors
The participant, Sponsor, Principal (non-injecting) Investigator, medical monitor, study coordinator, visual acuity technician, photographer, central reading center, and central laboratory will be masked to treatment assignment for the duration of the study.

Study Groups

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1.0 mg CLS-AX

Suprachoroidal injection of 10 mg/mL (1.0 mg in 0.1 mL) of CLS-AX

Group Type EXPERIMENTAL

CLS-AX

Intervention Type DRUG

CLS-AX will be administered by suprachoroidal injection into the study eye on Day 1 and then every 12 to 24 weeks as determined by protocol-defined disease activity criteria.

Aflibercept

Intravitreal injection of aflibercept (2 mg in 0.05 mL)

Group Type ACTIVE_COMPARATOR

Aflibercept

Intervention Type DRUG

Aflibercept will be administered by intravitreal injection into the study eye once every 8 weeks (Q8W).

Interventions

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CLS-AX

CLS-AX will be administered by suprachoroidal injection into the study eye on Day 1 and then every 12 to 24 weeks as determined by protocol-defined disease activity criteria.

Intervention Type DRUG

Aflibercept

Aflibercept will be administered by intravitreal injection into the study eye once every 8 weeks (Q8W).

Intervention Type DRUG

Other Intervention Names

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axitinib injectable suspension Eylea

Eligibility Criteria

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Inclusion Criteria

* Diagnosis of neovascular age-related macular degeneration (nAMD) in the study eye within 36 months of Visit 1.
* Subfoveal choroidal neovascularization (CNV) secondary to nAMD of any lesion type in the study eye that shows total lesion area ≤30 mm2, CNV component area of ≥50% of the total lesion area, and and CNV must not be associated with subfoveal hemorrhage, subfoveal fibrosis, or subfoveal atrophy.
* Previous treatment in the study eye with between 2 and 4 anti-VEGF intravitreal injections for nAMD (faricimab, ranibizumab, bevacizumab, brolucizumab, or aflibercept) per standard of care within 6 months of Visit 1.
* History of response to prior intravitreal anti-VEGF treatment in the study eye.
* ETDRS BCVA of between 20 and 80 letters (inclusive) in the study eye.

Exclusion Criteria

* ETDRS BCVA \<20 letters in the study eye.
* Central subfield thickness \> 400 μm or retinal pigment epithelium detachment thickness \>400 μm on SD-OCT in the study eye.
* Subretinal hemorrhage, fibrosis or atrophy of \>50% of the total lesion area and/or that involves the fovea on fundus fluorescein angiography and/or color fundus photography in the study eye.
* CNV due to causes other than AMD, such are ocular histoplasmosis, trauma, pathological myopia, angioid streaks, choroidal rupture, or uveitis, in the study eye.
* Any history of macular pathology unrelated to AMD affecting vision or contributing to the presence of intraretinal or subretinal fluid in the study eye.
Minimum Eligible Age

50 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Clearside Biomedical, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Susan Coultas, PhD

Role: STUDY_DIRECTOR

Clearside Biomedical, Inc.

Locations

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Associated Retina Consultants

Phoenix, Arizona, United States

Site Status

Retinal Research Institute, LLC

Phoenix, Arizona, United States

Site Status

California Retina Consultants

Bakersfield, California, United States

Site Status

Retina Consultants of Orange County

Fullerton, California, United States

Site Status

Northern California Retina Vitreous Associates Medical Group, Inc

Mountain View, California, United States

Site Status

Retina Consultants San Diego

Poway, California, United States

Site Status

Retinal Consultants of Southern California

Redlands, California, United States

Site Status

Retinal Consultants Medical Group, Inc.

Sacramento, California, United States

Site Status

Retina Group of Florida

Fort Lauderdale, Florida, United States

Site Status

Florida Retina Consultants

Lakeland, Florida, United States

Site Status

Retina Specialty Institute

Pensacola, Florida, United States

Site Status

Retina Associates of Florida

Tampa, Florida, United States

Site Status

Southeast Retina Center

Augusta, Georgia, United States

Site Status

Georgia Retina, PC

Marietta, Georgia, United States

Site Status

Illinois Retina Associates

Oak Park, Illinois, United States

Site Status

Wolfe Eye Clinic

Des Moines, Iowa, United States

Site Status

Cumberland Valley Retina Consultants

Hagerstown, Maryland, United States

Site Status

Vitreo-Retinal Associates, PC

Worcester, Massachusetts, United States

Site Status

Sierra Eye Associates

Reno, Nevada, United States

Site Status

Envision Ocular LLC

Bloomfield, New Jersey, United States

Site Status

Western Carolina Retinal Associates P.A.

Asheville, North Carolina, United States

Site Status

Tennessee Retina PC

Nashville, Tennessee, United States

Site Status

Retina Research Institute of Texas

Abilene, Texas, United States

Site Status

Texas Retina Associates - Arlington

Arlington, Texas, United States

Site Status

Austin Retina

Austin, Texas, United States

Site Status

Retina Consultants of Texas-Bellairre

Bellaire, Texas, United States

Site Status

Texas Retina Associates - Dallas

Dallas, Texas, United States

Site Status

Retina Consultants of Texas - Katy

Katy, Texas, United States

Site Status

Texas Retina Associates-Plano

Plano, Texas, United States

Site Status

Retina Consultants of Texas-San Antonio

San Antonio, Texas, United States

Site Status

Retina Group of Washington

Fairfax, Virginia, United States

Site Status

Spokane Eye Clinical Research

Spokane, Washington, United States

Site Status

Countries

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United States

Other Identifiers

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CLS1002-202

Identifier Type: -

Identifier Source: org_study_id

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