Peroxisomal Disorders and Retinal Degeneration

Area of Science:

• Genetics and Ophthalmology
• Metabolic Disorders
• Inherited Retinal Diseases

Background:

• Peroxisomal disorders are inherited metabolic diseases with variable severity, impacting lifespan.
• Retinopathy is a common ophthalmological complication in both severe and mild peroxisomal disorder cases.
• Next-generation sequencing has led to reclassification of patients and identification of new genetic defects causing retinal degeneration.

Purpose of the Study:

• To summarize current understanding of retinopathy in peroxisomal disorders.
• To highlight recent advances in genetic identification of peroxisomal disorders with retinal involvement.
• To identify knowledge gaps in the pathogenic mechanisms of peroxisomal retinopathy.

Main Methods:

• Literature review of genetic and ophthalmological studies.
• Analysis of next-generation sequencing data in patient reclassification.
• Review of recently identified peroxisomal gene defects and associated retinal phenotypes.

Main Results:

• Retinopathy is a consistent feature across the spectrum of peroxisomal disorders.
• Genetic reclassification and novel gene discoveries have expanded the landscape of peroxisomal disorders affecting vision.
• The precise molecular pathways driving retinal degeneration in these disorders are not yet fully elucidated.

Conclusions:

• Peroxisomal disorders represent an important, often overlooked, category of inherited retinal diseases.
• Further research into pathogenic mechanisms is essential for developing targeted therapies for peroxisomal retinopathy.