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Updated: Jan 19, 2026

Development of a Refined Protocol for Trans-scleral Subretinal Transplantation of Human Retinal Pigment Epithelial Cells into Rat Eyes
Published on: August 12, 2017
Retinal stem cell transplantation: Balancing safety and potential.
Mandeep S Singh1, Susanna S Park2, Thomas A Albini3
1Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
Human retinal stem cell transplantation shows promise for treating blindness. This review appraises safety data from clinical trials, addressing concerns from adverse events in poorly regulated centers.
Area of Science:
- Ophthalmology
- Regenerative Medicine
- Cell Therapy
Background:
- Retinal degenerative diseases cause vision loss and blindness.
- Stem cell transplantation is a promising therapeutic approach.
- Concerns exist regarding the safety of retinal stem cell transplantation due to reported adverse events.
Purpose of the Study:
- To review and evaluate the safety of human retinal stem cell transplantation.
- To assess the potential of this therapy for treating retinal degenerative diseases.
Main Methods:
- Systematic review of safety data from Phase I/II clinical trials.
- Appraisal of preclinical studies underpinning clinical trials.
- Analysis of reported adverse events in the scientific and lay press.
Main Results:
- Phase I/II clinical trials, often in academic partnerships, focus on patient safety.
- Unregulated centers have reported serious adverse events associated with cell therapy.
- Safety data from regulated trials are crucial for patient protection.
Conclusions:
- Human retinal stem cell transplantation requires rigorous safety evaluation.
- Ensuring patient safety is paramount for the clinical development of this therapy.
- Further research is needed to establish the safety profile for treating retinal degenerative diseases.
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11:03Subretinal Transplantation of Human Embryonic Stem Cell Derived-retinal Pigment Epithelial Cells into a Large-eyed Model of Geographic Atrophy
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