NCT07594236 · Cellio Therapeutics Inc
Phase 1 Study of C.001 in Retinal Degeneration
What this study is about
This is a first-in-human Phase 1 study evaluating the safety and how well patients handle the treatment of C.001 in patients with retinal diseases involving degeneration of the retinal pigment epithelium. Participants will receive a single administration of C.001 delivered by subretinal injection. The study will evaluate three dose levels in a sequential manner.
View original scientific description
This is a first-in-human Phase 1 study evaluating the safety and tolerability of C.001 in patients with retinal diseases involving degeneration of the retinal pigment epithelium. Participants will receive a single administration of C.001 delivered by subretinal injection. The study will evaluate three dose levels in a sequential manner. The primary objective is to assess the safety of C.001 over a 3-month period following administration. Participants will be followed for up to 12 months to further evaluate safety and explore changes in visual function and retinal structure.
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
- Age ≥18 years
- Diagnosis of retinal disease associated with retinal pigment epithelium degeneration (e.g., geographic atrophy or Stargardt disease)
- Visual acuity within protocol-defined limits
- Stable ocular condition prior to enrollment
- Medically suitable for ophthalmic surgery and anesthesia
- Willingness to comply with study procedures and follow-up
Exclusion criteria
- Active or prior choroidal neovascularization (CNV)
- Recent myocardial infarction or significant uncontrolled cardiovascular disease
- Uncontrolled glaucoma
- Significant ocular inflammatory disease
- Recent intraocular surgery within protocol-defined timeframe
- Active systemic infection
- Poorly controlled diabetes (e.g., HbA1c \>8.5%)
- Participation in another investigational study within 3 months prior to screening
Where
- Beverly Hills, California
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 Jun 12, 2026 · Source of record for eligibility and locations