Clinical & experimental ophthalmology · 2021
"Blepharophimosis-plus" syndromes: Frequency of systemic genetic disorders that also include blepharophimosis.
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Landau Prat Daphna, Nguyen Brian J, Strong Alanna, Katowitz William R, Katowitz James A
Аннотация
BACKGROUND: To determine the frequency of isolated blepharophimosis-ptosis-epicanthus inversus syndrome (BPES) versus systemic genetic disorders in patients presenting with blepharophimosis.
METHODS: Retrospective clinical records review. The records of all patients with blepharophimosis seen in the Division of Ophthalmology at the Children's Hospital of Philadelphia during a 12-year-period (2009-2020) were reviewed for medical history, clinical examination findings and results of genetic analyses.
RESULTS: The 135 patients identified with blepharophimosis included 72 females (53%) and 63 males (47%) whose mean ± standard deviation age at first visit was 3.5 ± 6.4 years (range 0-39.8 years). Sixty-seven of the patients (50%) had undergone genetic testing for FOXL2 gene mutation. Fifty-four (81%) harboured FOXL2 gene mutations and 13 (19%) did not. Altogether, 126 patients (93%) had a final diagnosis of isolated BPES. The remaining nine (7%) had syndromic diagnoses ("blepharophimosis-plus"), including Dubowitz syndrome (n = 2), Ohdo syndrome (n = 1), 22q11.2 duplication (n = 1) and 3q22 deletion (n = 2). Three patients with multiple congenital anomalies remain undiagnosed.
CONCLUSIONS: Blepharophimosis is an eyelid feature occurring most commonly in isolation due to FOXL2 gene mutation, but can also be a harbinger of multisystem disease not exclusive to isolated BPES, as observed in 7% of cases in this series. The ophthalmologist is often the first to recognise these unique features, and must consider and rule out non-BPES syndromes before establishing a diagnosed classic BPES. A comprehensive genetic evaluation is, therefore, indicated in all cases.
METHODS: Retrospective clinical records review. The records of all patients with blepharophimosis seen in the Division of Ophthalmology at the Children's Hospital of Philadelphia during a 12-year-period (2009-2020) were reviewed for medical history, clinical examination findings and results of genetic analyses.
RESULTS: The 135 patients identified with blepharophimosis included 72 females (53%) and 63 males (47%) whose mean ± standard deviation age at first visit was 3.5 ± 6.4 years (range 0-39.8 years). Sixty-seven of the patients (50%) had undergone genetic testing for FOXL2 gene mutation. Fifty-four (81%) harboured FOXL2 gene mutations and 13 (19%) did not. Altogether, 126 patients (93%) had a final diagnosis of isolated BPES. The remaining nine (7%) had syndromic diagnoses ("blepharophimosis-plus"), including Dubowitz syndrome (n = 2), Ohdo syndrome (n = 1), 22q11.2 duplication (n = 1) and 3q22 deletion (n = 2). Three patients with multiple congenital anomalies remain undiagnosed.
CONCLUSIONS: Blepharophimosis is an eyelid feature occurring most commonly in isolation due to FOXL2 gene mutation, but can also be a harbinger of multisystem disease not exclusive to isolated BPES, as observed in 7% of cases in this series. The ophthalmologist is often the first to recognise these unique features, and must consider and rule out non-BPES syndromes before establishing a diagnosed classic BPES. A comprehensive genetic evaluation is, therefore, indicated in all cases.