Mutations of the transcription factor FOXL2 gene in Chinese patients with blepharophimosis-ptosis-epicanthus inversus syndrome.
Blepharophimosis-ptosis-epicanthus inversus syndrome (BPES) is an autosomal dominant syndrome of eyelid malformations with (type I) or without (type II) associated premature ovarian failure. Multiple mutations in the exon and the putative core promoter region of FOXL2 gene encoding a putative forkhead transcription factor have been linked to this disease. To examine whether FOXL2 gene mutations contribute to BPES in the Chinese patient population, we screened 33 patients from 18 Chinese families with BPES of unknown types, together with 57 healthy individuals, including 27 relatives of the affected families. Genomic DNA was extracted from the participants' peripheral blood leukocytes, and amplified by polymerase chain reaction for various regions of the FOXL2 gene, followed by sequencing analysis. Ten mutations in the FOXL2 gene were detected: four were previously reported (g.1041_1042insC, g.1366_1367insT, g.909_938dup30, and g.900_929dup30), and six were novel ones (g.406T>A, g.-14G>A, g.1108_1109insC, g.2577C>T, g.1987C>A, and g.1002C>G). Among them, mutations in the coding region for the polyalanine tract, as well as novel mutations in the core promoter, the 3'-UTR, and in the forkhead domain were identified. Our results expanded the spectrum of FOXL2 mutations in BPES and provided additional valuable genetic information for this rare disease.
Ophthalmology and Visual Sciences Key Lab, Beijing TongRen Eye Center, Beijing TongRen Hospital, Capital Medical University, Beijing, PR China.
Dongmei
D
Li
Wotan
W
Zeng
Jing
J
Tao
Shentao
S
Li
Chen
C
Liang
Xiaojun
X
Chen
Weihua
W
Mu
Xiaohong
X
Wang
Yi
Y
Qin
Ying
Y
Jie
Wenbin
W
Wei
D044466:Asian People / Q000235:genetics*; D001483:Base Sequence; D016569:Blepharophimosis / Q000235:genetics*; D001763:Blepharoptosis / Q000235:genetics*; D016022:Case-Control Studies; D002681:China; D004247:DNA / Q000235:genetics / Q000302:isolation & purification; D005260:Female; D000074842:Forkhead Box Protein L2; D051858:Forkhead Transcription Factors / Q000235:genetics*; D005820:Genetic Testing; D006579:Heterozygote; D006801:Humans; D008297:Male; D008969:Molecular Sequence Data; D009154:Mutation; D020125:Mutation, Missense; D010375:Pedigree; D017422:Sequence Analysis, DNA; D012689:Sequence Homology, Nucleic Acid; D013577:Syndrome
C421604:FOXL2 protein, human; D000074842:Forkhead Box Protein L2; D051858:Forkhead Transcription Factors; D004247:DNA