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Current Status
Recruiting
Verified Oct 27, 2025
Phase
Clinical Trial
Sponsor
National Eye Institute (NEI)
Enrollment Target
56
Start Date
Nov 2020
Interested in learning more? Complete the form below.
No-Cost Study Care
Advance Medical Science
Contribute to groundbreaking research
Cutting-Edge Treatment
Access to innovative therapies
Expert Medical Care
Close monitoring by specialists
Possible Compensation*
For time and travel (varies by study)
Help Others
Benefit future patients
*Compensation varies by study. Confirm details with coordinator.
Background: ABCA4 retinopathy is a genetic disease in which the ABCA4 protein is absent or faulty. It can cause waste material to collect in the eye and may cause cells to die. The cell death can lead to vision loss. Researchers want to see if an oral drug called metformin can help. Objective: To see if metformin is safe and possibly helps to slow the rate of ABCA4 retinopathy. Eligibility: People age 12 and older who have ABCA4 retinopathy and have problems with their vision.
Study Type
INTERVENTIONAL
Target Enrollment
56 participants
Age Range
12 Years - 100 Years
Gender
ALL
Sponsor
National Eye Institute (NEI)
Choose your preferred location or select flexible during enrollment
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.
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.
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.
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.
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.
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.
Browse all ankylosing spondylitis clinical trials in these cities — not just this study.
Join others in Maryland exploring innovative treatment options through clinical research
If you're searching for Stargardt Disease treatment in Bethesda, participating in a clinical research study may provide access to innovative approaches under expert medical supervision. This study is actively recruiting participants in Bethesda, Ann Arbor and surrounding areas.
Clinical trials offer participants the opportunity to receive cutting-edge treatments while contributing to medical research that may help future patients with Stargardt Disease. All study-related care is provided at no cost to participants.
Important Clinical Trial Information
This information is provided for educational purposes and does not constitute medical advice. Clinical trial participation involves potential risks and benefits. Eligibility requirements apply and will be assessed during the screening process.
Study identifier: NCT04545736. For complete study details, visit ClinicalTrials.gov. Always consult with your healthcare provider before making decisions about your medical care or participating in clinical research.