Phenotype-genotype correlations and emerging pathways in ocular anterior segment dysgenesis

Area of Science:

• Ophthalmology
• Genetics
• Developmental Biology

Background:

• Anterior segment eye disorders, including aniridia, Axenfeld-Rieger anomalies, primary congenital glaucoma, and Peters anomaly, significantly impact vision and frequently lead to secondary glaucoma.
• These conditions arise from complex developmental, embryological, and genetic interactions, often presenting with overlapping phenotypes and genetic diversity.

Purpose of the Study:

• To review the clinical features and associated genes of various anterior segment dysgenesis conditions.
• To highlight phenotype-genotype correlations and recent genetic discoveries, including novel genes and pathways.
• To provide a diagnostic guide for clinicians managing patients with these disorders.

Main Methods:

• Literature review of clinical presentations, genetic factors, and molecular pathways.
• Analysis of phenotype-genotype correlations using current genetic sequencing technologies.
• Synthesis of information to create a clinical diagnostic guide.

Main Results:

• Comprehensive overview of aniridia, Axenfeld-Rieger anomalies, primary congenital glaucoma, Peters anomaly, and syndromic forms.
• Identification of key genes and genetic pathways implicated in anterior segment development and disease.
• Expansion of known phenotypes through next-generation sequencing studies.

Conclusions:

• Understanding the genetic basis and clinical spectrum of anterior segment dysgenesis is crucial for accurate diagnosis and management.
• Advances in genetic sequencing are continually refining our knowledge of these complex disorders.
• This review serves as a valuable resource for clinicians in diagnosing and managing patients with anterior segment dysgenesis.