Clinical Report: FOXC1 Duplications Linked to Early-Onset Glaucoma

Overview

A study identified FOXC1 duplications in patients with early-onset glaucoma, particularly juvenile open-angle glaucoma. These duplications accounted for 12.3% of genetically diagnosed cases across two cohorts, highlighting their significance in genetic testing strategies.

Background

Understanding the genetic basis of early-onset glaucoma is crucial for diagnosis and management. FOXC1 duplications represent a significant genetic factor in juvenile open-angle glaucoma, which can lead to advanced disease if not detected early. This study emphasizes the need for comprehensive genetic testing in patients presenting with glaucoma symptoms at a young age.

Data Highlights

Key Findings

• All patients with FOXC1 duplications had glaucoma.
• Seventeen patients were diagnosed with juvenile open-angle glaucoma.
• FOXC1 duplications accounted for 12.3% of genetically diagnosed juvenile open-angle glaucoma cases.
• Intraocular pressure at diagnosis ranged from 22 to 53 mmHg.
• More than half of patients lacked overt anterior segment dysgenesis features.
• Systemic findings included neurodevelopmental conditions and psychiatric diagnoses.

Clinical Implications

Clinicians should consider FOXC1 duplications in the genetic evaluation of patients with early-onset glaucoma. Early identification may facilitate timely intervention and management strategies to prevent disease progression.

Conclusion

The findings underscore the importance of incorporating copy-number variant analysis in genetic testing for early-onset glaucoma, potentially leading to improved patient outcomes.

Related Resources & Content

1. Maxwell GE, et al., JAMA Ophthalmology, 2026 -- Association of FOXC1 Duplications With Juvenile Open-Angle Glaucoma
2. Acta Neuropathologica — Acquisition of Somatic LINE-1 Promoter Enhances Oncogenic Activation of FOXR2 in Pediatric Brain Tumors
3. Ophthalmology Management — Genetic Predisposition to Glaucoma
4. Glaucoma Physician — New Genetic Links to Glaucoma Identified
5. The Journal of Clinical Endocrinology & Metabolism — Phenotypic Associations with SOX9 Upstream Duplications: Advancements in Understanding Clinical Presentation and Diagnosis
6. Genetic Predisposition to Glaucoma
7. New Genetic Links to Glaucoma Identified
8. Association of FOXC1 Duplications With Juvenile Open-Angle Glaucoma | Genetics and Genomics | JAMA Ophthalmology | JAMA Network
9. Primary Open-Angle Glaucoma Preferred Practice Pattern® - PubMed
10. Diagnostic accuracy of next generation sequencing-based genetic research for primary glaucoma: A systematic review and meta-analysis - ScienceDirect