Can Stem Cell Therapy Slow GA? - Report - MDSpire

Can Stem Cell Therapy Slow GA?

  • By

  • VIVIENNE HAU, MD, PHD

  • July 15, 2026

  • 3 min

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Clinical Report: Can Stem Cell Therapy Slow GA?

Overview

The phase 1b trial of ASP7317 demonstrated a favorable safety profile and improvements in best-corrected visual acuity (BCVA) in patients with advanced geographic atrophy (GA).

Background

Geographic atrophy (GA) represents a late stage of age-related macular degeneration (AMD) and currently approved therapies can only slow disease progression without restoring lost vision. Investigating novel therapies, such as stem cell-derived retinal pigment epithelial (RPE) cell therapy, is critical for advancing treatment options for patients with advanced GA.

Data Highlights

No numerical data available in the source material.

Key Findings

  • ASP7317, a human stem cell-derived RPE cell therapy, showed a favorable safety profile with no significant adverse events related to graft failure or tumor growth.
  • Best-corrected visual acuity (BCVA) improved in the small and medium cohorts over 52 weeks compared to the fellow eye, which experienced a loss in letters.
  • Geographic atrophy area showed stabilization over time in treated patients.
  • Most patients reported that their vision was either the same or improved according to the Patient Global Impression of Change (PGIC) questionnaire.

Clinical Implications

Continued investigation in larger trials will be essential to confirm these findings.

Conclusion

The phase 1b trial results for ASP7317 indicate promising safety and efficacy outcomes in patients with advanced geographic atrophy.

Related Resources & Content

  1. Retinal Physician, 2026 -- Stem Cell Therapy Shows Early Vision Gains in GA
  2. Retinal Physician, 2025 -- Trial Data Indicates Cell Therapy May Reverse GA Damage
  3. Retinal Physician, 2026 -- Gene Therapy for GA Receives FDA Fast Track Designation
  4. Retinal Physician, 2026 -- The Therapeutic Pipeline for Geographic Atrophy
  5. Age-Related Macular Degeneration Preferred Practice Pattern® - Ophthalmology, 2024
  6. Astellas to Spotlight New Research for Geographic Atrophy at ASRS 2026 Annual Meeting
  7. Geographic Atrophy Management Consensus (GA-MAC): a Delphi panel study on identification, diagnosis and treatment
  8. Age-Related Macular Degeneration Preferred Practice Pattern® - Ophthalmology

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