Last updated on March 2017

Study of Subretinal Implantation of Human Embryonic Stem Cell-Derived RPE Cells in Advanced Dry AMD


Brief description of study

The Phase I/IIa clinical trial is designed to assess the feasibility of delivery and safety of Human Embryonic Stem Cell-Derived RPE Cells on a parylene membrane (CPCB-RPE1) in patients with advanced, dry age-related macular degeneration. Primary Objective: • To test the safety and tolerability of CPCB-RPE1 during and after subretinal implantation in patients with geographic atrophy with evidence of involvement of the central fovea. Secondary Objective: • To assess visual acuity, visual field, and retinal function after CPCB-RPE1 implantation. Implanted and fellow eyes will be compared post-implantation to assess the ability of the implant to prevent disease progression. Exploratory Objectives: • To assess the feasibility of measuring the change in area of geographic atrophy over time using spectral domain optical coherence tomography or fundus autofluorescence.

Detailed Study Description

The study will include two cohorts, each of 10 patients. For the first cohort, the study population will be patients with advanced, dry AMD with evidence of significant geographic atrophy involving the fovea. These patients will have significant central vision loss with best-corrected visual acuity (BCVA) of the eye to be implanted of BCVA of 20/200 or worse. Each of these patients will have substantial RPE and photoreceptor loss. Patients will be screened for overall health status to minimize risks associated with retinal surgery and any subsequent immunosuppression. As the safety and tolerability of CPCB-RPE1 is demonstrated in the first cohort, patients with less advanced disease will be recruited into a second cohort in this Phase I/IIa clinical trial. In this second cohort patients will have significant central vision loss with BCVA of the eye to be implanted of 20/80 or worse, but better than or equal to 20/400 with comparably less damage to the RPE/photoreceptor complex than Cohort 1. These patients will be screened in the same manner for overall health status to minimize risks associated with retinal surgery and any subsequent immunosuppression. Assessments of visual function will be the same as in Cohort 1.

Clinical Study Identifier: NCT02590692

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Firas Rahhal, MD

Retina-Vitreous Associates Medical Group
Beverly Hills, CA United States
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Amir H Kashani, MD PhD

USC Keck School of Medicine / Eye Institute
Los Angeles, CA United States
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Clement Chan, MD

Southern California Desert Retina Consultants
Palm Desert, CA United States
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Robert Avery

California Retina Consultants
Santa Barbara, CA United States
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Robert Avery

California Retina Consultants
Santa Maria, CA United States
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