NCT06445322 · Ascidian Therapeutics, Inc
Prescreening Study to Identify Potential Stargardt Participants for ACDN-01 Clinical Trials (STARPATH)
What this study is about
This is an observational prescreening study. Individuals who are eligible for prescreening will undergo testing procedures that may be used to determine eligibility in ACDN-01 clinical trials.
View original scientific description
This is an observational prescreening study. Individuals who are eligible for prescreening will undergo testing procedures that may be used to determine eligibility in ACDN-01 clinical trials.
Interventions
DIAGNOSTIC_TEST
Prescreening Assessments
Various genetic and visual assessments.
Primary outcome measures
Confirm mutations in the ABCA4 gene
Time frame: 12 months
Using a Clinical Laboratory Improved Amendments (CLIA)-certified laboratory.
Confirm the absence of pathogenic mutations in genes known to cause retinal disease other than ABCA4-related retinopathy
Time frame: 12 months
Using a Clinical Laboratory Improved Amendments (CLIA)-certified laboratory.
Measure BCVA and LLVA
Time frame: 12 months
Measure best corrected visual acuity and low luminance visual acuity
Measure the area of retinal atrophy
Time frame: 12 months
Using FAF imaging
Measure baseline retinal structure
Time frame: 12 months
Using OCT (SD-OCT)
Historical FAF or OCT images
Time frame: 4 years
Confirm historical timepoint images
Historical BCVA/LLVA measurements
Time frame: 4 years
Collect past measurements
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Presence of mutations in the ABCA4 gene
- ABCA4 retinopathy phenotype (Stargardt disease type 1 or cone-rod dystrophy) Key
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.
Where
- San Francisco, California
- Gainesville, Florida
- Baltimore, Maryland
- Boston, Massachusetts
- Ann Arbor, Michigan
- Cincinnati, Ohio
- Dallas, Texas
- Houston, Texas
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Mar 11, 2026 · Source of record for eligibility and locations