FOXC1 Duplications Linked to Early-Onset Glaucoma - Scorecard - MDSpire

FOXC1 Duplications Linked to Early-Onset Glaucoma

FOXC1 duplications were the second most common monogenic finding among genetically solved juvenile open-angle glaucoma cases in one registry, supporting the use of copy-number variant analysis in early-onset glaucoma testing.

  • By

  • Andrea Surnit

  • May 27, 2026

  • 4 min

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Clinical Scorecard: FOXC1 Duplications Linked to Early-Onset Glaucoma

At a Glance

CategoryDetail
ConditionEarly-Onset Glaucoma
Key MechanismsFOXC1 duplications associated with variable ocular phenotypes.
Target PopulationPatients with juvenile open-angle glaucoma and related conditions.
Care SettingRetrospective cohort study in specialized eye care centers.

Key Highlights

  • FOXC1 duplications account for 12.3% of genetically diagnosed juvenile open-angle glaucoma cases.
  • Most diagnoses occurred between ages 8 and 40 years.
  • Intraocular pressure at diagnosis ranged from 22 to 53 mmHg.
  • Systemic findings included neurodevelopmental conditions and dental anomalies.
  • Elevated central corneal thickness can lead to overestimation of intraocular pressure.

Guideline-Based Recommendations

Diagnosis

  • Consider copy-number variant analysis for genetic testing in early-onset glaucoma.

Management

  • Patients may require selective laser trabeculoplasty or glaucoma surgery for pressure control.

Monitoring & Follow-up

  • Regular examination for intraocular pressure and ocular phenotype variations.

Risks

  • Potential for missed earlier detection of glaucoma in patients presenting after age 40.

Patient & Prescribing Data

20 patients from 10 families with FOXC1 duplications.

Advanced disease noted in 12 patients at most recent examination.

Clinical Best Practices

  • Incorporate gonioscopy in assessments for accurate diagnosis.
  • Standardize phenotyping across cohorts to improve diagnostic accuracy.

Related Resources & Content

Original Source(s)

FOXC1 Duplications Linked to Early-Onset Glaucoma

  • by Andrea Surnit

  • May 27, 2026

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