Survival of Neural Progenitors Derived from Human Embryonic Stem Cells Following Subretinal Transplantation in Rodents.
Hamzah Aweidah, Chen Matsevich, Hanita Khaner...
https://pubmed.ncbi.nlm.nih.gov/37140896/Actively Recruiting
Led by Genentech, Inc. · Updated on 2026-07-15
60
Participants Needed
17
Research Sites
N/A
Total Duration
Researchers are studying the safety and success of delivering OpRegen cells through subretinal surgery in people with geographic atrophy caused by age-related macular degeneration AMD. This Phase IIa study focuses on how well the cells reach target areas in the eye and evaluates procedure-related side effects. There is also an optional substudy assessing a new retinal imaging device called EarlySight Cellularis Discovery to explore its usefulness for eye assessment, but this device does not affect clinical care or outcomes. Participants will receive a dose of up to approximately 200,000 OpRegen cells delivered into the subretinal space via surgery. The study is open-label and involves a single treatment group. The optional imaging substudy is available to those who meet additional criteria and can comply with extra assessments using the EarlySight Cellularis Discovery device. During the study, participants will undergo detailed eye exams including optical coherence tomography OCT imaging to observe retinal structure changes. Researchers will monitor the participants for adverse events and evaluate treatment delivery success at 3 months after surgery. The study is expected to continue until March 2031, with regular visits to assess safety and retinal improvements. Participation involves surgical procedures and follow-up assessments focused on the study eyes condition.
CONDITIONS
A Study to Optimize Subretinal Surgical Delivery and to Evaluate Safety and Activity of Opregen in Participants With Geographic Atrophy Secondary to Age-Related Macular Degeneration (GAlette); Adaptive Optics (AO) Retinal Imaging Substudy in Association With Study GR44251
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Reference Study ID Number: GR44251 https://forpatients.roche.com/ No attachments to email below
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Genentech, Inc.
Lead Sponsor
This table compares participation in this trial with other options available for this condition. The information is drawn from published research and the trial’s study details and is provided for educational purposes only.
| Factors | OpRegen (Surgical Therapy) | Current Care (Supportive and Visual Rehabilitation) |
|---|---|---|
| What it is | Investigational subretinal surgical transplantation of OpRegen—human embryonic stem cell-derived retinal pigment epithelial cells—using a surgical procedure under monitored anesthesia. | Currently, management for geographic atrophy relies on supportive care, visual rehabilitation, and monitoring. No approved treatments can restore lost retinal cells or reverse established atrophy. |
| Role in the trial | Evaluated for safety and surgical delivery optimization in participants with GA secondary to AMD who qualify for subretinal delivery. | Serves as clinical context for what participants would typically receive outside trial participation; not a control arm in the trial. |
| Main use or clinical purpose | Potential restoration of retinal pigment epithelium to preserve or improve retinal structure and function in GA due to AMD; evaluated for procedural feasibility and initial safety/activity. | Aims to maintain quality of life, slow functional decline, and maximize use of remaining vision through supportive and adaptive strategies. |
| How it is given or performed | Vitreoretinal surgery with subretinal injection of up to approximately 200,000 OpRegen cells, performed under monitored anesthesia care in the study eye. | Instruction, counseling, and referral for visual rehabilitation, environmental adaptation, low vision aids, and regular clinical follow-up; no surgical or cell-based restorative procedure offered as standard. |
| What is known from published evidence? | No published clinical results yet for this trial; safety and early outcomes are being evaluated in ongoing research. Preclinical studies support the biological rationale for this cell-based approach. | There are currently no proven restorative or regenerative treatments for established GA. Current practice is based on expert consensus, rehabilitation approaches, and accumulating evidence on assisting adaptation to vision loss. |
| Important limitations | Experimental procedure with unknown long-term safety, effectiveness, or durability; risks associated with retinal surgery and use of stem cell-derived products apply. Participation is limited to specific surgical candidates with advanced GA. | Current standard care does not restore lost retinal function or reverse atrophy; support is limited to adaptation and rehabilitation. |
Disclaimer: This comparison is created with the help of artificial intelligence(AI) and may contain errors or missing information. It is not medical advice and does not mean one option is better or safer than another. Clinical trials are still being studied, and joining a trial is your choice. Please consult your healthcare professional before making any decisions.
You may qualify if you...
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Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
Duration - Up to 3 months
Participants receive a surgical delivery of OpRegen cells into the subretinal space in the study eye.
Duration - Up to 3 months post-surgery
Participants are monitored for safety, retinal structure changes, and treatment delivery success through eye exams and imaging.
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NA
Model
SINGLE_GROUP
Primary Purpose
TREATMENT
Number of Arms
1
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Hamzah Aweidah, Chen Matsevich, Hanita Khaner...
https://pubmed.ncbi.nlm.nih.gov/37140896/Genentech, Inc.
Lead Sponsor