# Epigenetic regulation of gene expression in rare inherited retinal disorders

## TL;DR

This paper explores how epigenetic changes control gene activity in rare eye diseases, offering insights into how these changes affect vision and potential treatments.

## Contribution

The paper integrates current knowledge on epigenetic mechanisms in retinal disorders, highlighting their role in disease progression and therapeutic potential.

## Key findings

- Epigenetic regulation is crucial for maintaining retinal cell identity and function.
- Epigenetic dysregulation contributes to photoreceptor loss and disease progression in inherited retinal dystrophies.
- Emerging epigenetic-based therapies show promise but face significant translational challenges.

## Abstract

The retina is a highly specialized neural tissue characterized by extreme cellular differentiation, high metabolic demand, and lifelong exposure to environmental stressors. These features render retinal cell identity exquisitely dependent on epigenetic regulation of gene expression. Rare hereditary retinal disorders offer a unique framework for understanding how epigenetic mechanisms modulate genotype–phenotype relationships in the human eye. This Mini Review provides an integrated overview of DNA methylation, histone modifications, chromatin remodeling, and non-coding RNA-mediated regulation in retinal development, homeostasis, and degeneration. We discuss how epigenetic dysregulation contributes to photoreceptor loss, phenotypic variability, and disease progression in inherited retinal dystrophies and syndromic disorders affecting the retina, and we highlight emerging translational opportunities and current limitations of epigenetic-based therapeutic strategies for rare retinal disease.