A Phase IIb Randomized, Multicenter Trial of Subretinal CPCB-RPE1 in Advanced Dry AMD (Geographic Atrophy)
Regenerative Patch Technologies, LLC · with California Institute for Regenerative Medicine (CIRM) · NCT06557460
Opens the official ClinicalTrials.gov record, with the study team’s contacts. Bored Studies doesn’t enroll anyone.
Key facts
- Compensation
- Not posted. Ask the study team before screening.
- Who can join
- Ages 55–90 · All sexes
- Healthy volunteers
- Not accepted (a condition is required)
- Study type
- Interventional · Phase 2
- Target enrollment
- 24
- US sites recruiting
- 5
- Study start
- August 1, 2025
- Record last updated
- September 23, 2026
Status re-checked against ClinicalTrials.gov within the last 12 hours.
What the study is about
This is a Phase IIb randomized, clinical trial designed to assess the safety and efficacy of unilateral implantation of the CPCB-RPE1 implant in subjects with geographic atrophy involving the fovea.
Up to 6 surgical implantation sites will deliver the CPCB-RPE1 in this Phase IIb clinical trial. Additional study sites may serve as referral or follow-up sites. Twenty-four (24) subjects will participate in the trial and will be randomized 3:1 to one of 2 groups:
- The treatment group receiving the CPCB-RPE1 implant (up to 18 subjects).
- The control group receiving a simulated "sham" implantation procedure (up to 6 subjects)
Being studied: Surgical implantation of the CPCB-RPE1 implant
Conditions: Dry Age-related Macular Degeneration; Geographic Atrophy
Eligibility criteria
Copied from the official record. The study team makes the final decision at screening.
Show full criteria
Eligible participants include
- Age 55 to 90 years of age (inclusive), presenting with geographic atrophy involving the fovea in advanced, age-related, dry AMD.
- Clinical findings consistent with advanced dry AMD with evidence of one or more areas of ≥4.0mm2 but not exceeding 15.0 mm2 of geographic atrophy involving the fovea.
- Geographic atrophy defined as attenuation or loss of RPE as observed by biomicroscopy, OCT, or FAF.
- The best-corrected visual acuity (BCVA) of the eye to receive the implant will be ≥20/200 (35 EDTRS letters) to 20/63 (60 EDTRS letters) inclusive. The BCVA of the eye that is NOT to receive the implant will be better or equal to the eye that will receive the implant.
- Medically suitable to undergo pars plana vitrectomy and the surgical implant procedure, including being able to position post-operatively and use post-operative medications as required.
- Medically suitable for general anesthesia or monitored intravenous sedation, if needed.
- Pseudophakic in the study eye, to remove the risk of cataract formation following vitrectomy.
- Participants also must be willing and able to provide written, signed informed consent for this study.
- Participants able to complete the baseline microperimetry retinal sensitivity testing.
- On baseline microperimetry, participants must have ≥5 spots in the perilesional region with a retinal sensitivity between 3 and 17 Db.
Recruiting US locations
Retina Associates of Southern California
Huntington Beach, CA 92647
Site contact: 833-734-3678 · clinicaltrials@regenerativepatch.com
USC - Keck
Los Angeles, CA 90033
Site contact: 833-734-3678 · clinicaltrials@regenerativepatch.com
University Retina
Lemont, IL 60439
Site contact: 833-734-3678 · clinicaltrials@regenerativepatch.com
Austin Retina Associates
Austin, TX 78705
Site contact: Clinical Research · 833-734-3678 · clinicaltrials@regenerativepatch.com
Retina Consultants of Texas
The Woodlands, TX 77384
Site contact: 833-734-3678 · clinicaltrials@regenerativepatch.com
Study contacts (from the official record)
- Clinical Research · 833-734-3678 · clinicaltrials@regenerativepatch.com
- Clinical Research · 650-394-5835