A Novel Forkhead Box L2 Missense Mutation, c.1068G>C, in a Chinese Family With Blepharophimosis/Ptosis/Epicanthus Inversus Syndrome.
2021
ABSTRACT The aim of the study was to report a novel forkhead box L2 (FOXL2) missense mutation in a Chinese blepharophimosis/ptosis/epicanthus inversus syndrome family. Three generations of the Chinese family with blepharophimosis/ptosis/epicanthus inversus syndrome were enrolled in this study. Blood samples from patients of this family were collected and then analyzed by whole-exome sequencing. Confocal microscopy was performed to detect the subcellular location of FOXL2. Transactivation studies were performed and verified with real time polymerase chain reaction. A novel mutation (c.1068G>C) located in the downstream of deoxyribonucleic acid-binding forkhead domain was identified. Confocal photos showed the novel mutation did not disturb FOXL2 function, and the mutant protein could still transactivate steroidogenic acute regulatory protein, a key regulator of primary ovarian failure (POF). Our study revealed a novel missense mutation (c.1068G>C) and expanded the spectrum of FOXL2 gene mutations.
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