Study to Evaluate ACDN-01 in ABCA4-related Stargardt Retinopathy (STELLAR)

NCT ID: NCT06467344

Last Updated: 2025-12-02

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

RECRUITING

Clinical Phase

PHASE1/PHASE2

Total Enrollment

15 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-06-11

Study Completion Date

2030-12-01

Brief Summary

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This study is an open-label, single ascending dose clinical trial in participants who have ABCA4-related retinopathies. This is the first-in-human clinical trial in which ACDN-01 will be evaluated for safety, tolerability, and preliminary efficacy following a single subretinal injection of ACDN-01.

Detailed Description

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This is an open-label, single ascending dose study of ACDN-01 in adult participants with ABCA4-related retinopathy. The study is designed to evaluate the safety, tolerability, and evidence of biological effect of SAD levels (low, medium, and high) of ACDN-01 when delivered subretinally.

Participants will be followed on study for 2 years for the primary safety and preliminary efficacy endpoints, after which they will continue in the study in a 3-year long-term follow-up period, for a total study duration of 5 years.

Conditions

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Stargardt Disease Cone Rod Dystrophy Juvenile Macular Degeneration Stargardt Disease 1

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

SEQUENTIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Low dose of ACDN-01

One time low dose of ACDN-01.

Group Type EXPERIMENTAL

ACDN-01

Intervention Type DRUG

ACDN-01 is an AAV-based vector carrying a DNA construct encoding for an ABCA4 RNA exon editor. One time administration is via subretinal injection.

Mid-dose of ACDN-01

One time mid-dose of ACDN-01.

Group Type EXPERIMENTAL

ACDN-01

Intervention Type DRUG

ACDN-01 is an AAV-based vector carrying a DNA construct encoding for an ABCA4 RNA exon editor. One time administration is via subretinal injection.

High dose of ACDN-01

One time high dose of ACDN-01.

Group Type EXPERIMENTAL

ACDN-01

Intervention Type DRUG

ACDN-01 is an AAV-based vector carrying a DNA construct encoding for an ABCA4 RNA exon editor. One time administration is via subretinal injection.

Interventions

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ACDN-01

ACDN-01 is an AAV-based vector carrying a DNA construct encoding for an ABCA4 RNA exon editor. One time administration is via subretinal injection.

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Presence of mutations in the ABCA4 gene
* ABCA4 retinopathy phenotype (Stargardt disease type 1 or cone-rod dystrophy)
* Area of atrophy located in the macula of the study eye
* BCVA of 20/50 (0.4 logMAR) or worse

Exclusion Criteria

* The presence of pathogenic or likely pathogenic mutations in other genes known to cause cone-rod dystrophy or Stargardt maculopathy
* Retinal disease other than ABCA4-related retinopathy
* Presence of a medical condition (systemic or ophthalmic), psychiatric condition, including substance abuse disorder, or physical examination or laboratory finding that may in the opinion of the principal investigator and sponsor preclude adherence to the scheduled study visits, safe participation in the study, or affect the results of the study.
Minimum Eligible Age

12 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Ascidian Therapeutics, Inc

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Alia Rashid

Role: STUDY_DIRECTOR

Ascidian Therapeutics

Locations

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University of San Francisco

San Francisco, California, United States

Site Status RECRUITING

Vitreo Retinal Associates

Gainesville, Florida, United States

Site Status RECRUITING

Bascom Palmer Eye Institute

Miami, Florida, United States

Site Status RECRUITING

Wilmer Eye Institute at John Hopkins

Baltimore, Maryland, United States

Site Status RECRUITING

Massachusetts Eye and Ear

Boston, Massachusetts, United States

Site Status RECRUITING

University of Michigan Kellogg Eye Center

Ann Arbor, Michigan, United States

Site Status RECRUITING

Cincinnati Eye Institute

Cincinnati, Ohio, United States

Site Status RECRUITING

Casey Eye Institute OHSU

Portland, Oregon, United States

Site Status RECRUITING

Retina Foundation of the Southwest

Dallas, Texas, United States

Site Status RECRUITING

Retina Consultants of Texas

Houston, Texas, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Associate Director, Clinical Operations

Role: CONTACT

207-573-0412

References

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Doi A, Delaney C, Tanner D, Burkhart K, Bell RD. RNA exon editing: Splicing the way to treat human diseases. Mol Ther Nucleic Acids. 2024 Aug 16;35(3):102311. doi: 10.1016/j.omtn.2024.102311. eCollection 2024 Sep 10.

Reference Type DERIVED
PMID: 39281698 (View on PubMed)

Other Identifiers

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ACDN-01-001

Identifier Type: -

Identifier Source: org_study_id

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