Family history in primary open-angle glaucoma

Area of Science:

• Ophthalmology
• Genetics
• Public Health

Background:

• Glaucoma, a leading cause of irreversible blindness, is often linked to family history.
• Primary open-angle glaucoma (POAG) and ocular hypertension (OH) are common forms with varying risk factors.

Purpose of the Study:

• To investigate the role of family history in the prevalence of POAG and OH.
• To explore potential differences in inheritance patterns (maternal vs. paternal) and associations with specific HLA antigens.

Main Methods:

• Retrospective analysis of patient data including family history of glaucoma.
• Comparison of family history prevalence in POAG and OH groups.
• Analysis of family history patterns in relation to HLA-B7 or B12 antigen status in OH patients.

Main Results:

• 50% of POAG patients and 43% of OH patients reported a family history of glaucoma.
• Positive family history was more common in OH patients with HLA-B7 or B12 antigens.
• POAG patients showed a significantly higher prevalence of maternal (vs. paternal) family history (P < .0005).
• OH patients, particularly those without glaucomatous field loss or with specific HLA antigens, did not show a maternal predominance in family history.

Conclusions:

• Family history is a crucial risk factor for POAG and OH.
• Maternal inheritance may play a significant role in POAG pathogenesis, suggesting possible cytoplasmic factors.
• Further research is warranted to elucidate the genetic and non-genetic factors contributing to glaucoma risk.