What is BPES - Blepharophimosis Ptosis Epicanthus Inversus Syndrome

BPES (Blepharophimosis Ptosis Epicanthus Inversus Syndrome) is a rare genetic disorder characterized by specific eyelid abnormalities, including narrow eye openings, drooping eyelids, and a skin fold near the inner eye corners. While primarily affecting the eyes, the condition may also involve premature ovarian insufficiency in females, depending on the genetic subtype.

What are the primary symptoms of BPES?

The clinical presentation of Blepharophimosis Ptosis Epicanthus Inversus Syndrome involves four hallmark eye features: blepharophimosis (shortened horizontal eyelids), ptosis (drooping upper eyelids), epicanthus inversus (a vertical fold of skin near the inner corner), and telecanthus (increased distance between the inner corners of the eyes). In our DiseaseMaps.org community, 70 members have shared their experiences with these physical characteristics, which are often present at birth.

What are the subtypes of Blepharophimosis Ptosis Epicanthus Inversus Syndrome?

Geneticists classify BPES into two distinct types based on the presence of reproductive system involvement:

• Type I: Includes the four classic eyelid symptoms plus premature ovarian insufficiency, leading to early menopause and potential infertility.


• Type II: Characterized solely by the eyelid abnormalities, with no associated reproductive system issues.

What causes BPES and how is it inherited?

Blepharophimosis Ptosis Epicanthus Inversus Syndrome is caused by mutations in the FOXL2 gene, which plays a critical role in eyelid development and ovarian function. It follows an autosomal dominant inheritance pattern, meaning an affected individual has a 50% chance of passing the mutation to each child. Because the gene is located on chromosome 3, the condition affects both males and females equally, with no specific geographic predilection.

How does BPES differ from other eyelid conditions?

Unlike isolated ptosis or common eyelid folds, BPES is a complex, multi-feature syndrome. The specific combination of horizontal shortening of the eyelids paired with the epicanthal folds makes Blepharophimosis Ptosis Epicanthus Inversus Syndrome clinically distinct. Diagnosis is typically confirmed through genetic testing for FOXL2 mutations, which is essential for determining the subtype and guiding long-term care.

Next steps

• Consult an oculoplastic surgeon to discuss surgical management for eyelid function and aesthetics.


• Speak with a clinical geneticist to confirm your diagnosis and understand the implications for family planning.


• If BPES Type I is diagnosed, consult a reproductive endocrinologist regarding ovarian health.


• Connect with the 70 members at DiseaseMaps.org to share support and lived experiences with others managing this condition.

Medical disclaimer: This content is for informational purposes only and does not constitute medical advice; always consult with a qualified healthcare professional regarding your specific health needs.

References

• NIH Genetic and Rare Diseases Information Center (GARD): BPES Overview


• Orphanet: Blepharophimosis-ptosis-epicanthus inversus syndrome


• OMIM (Online Mendelian Inheritance in Man): FOXL2 gene and BPES


• DiseaseMaps.org community data and patient resources