The novel compound heterozygous mutations, V434del and W666X, in WFS1 gene causing the Wolfram syndrome in a Chinese family.
Wolfram syndrome (WFS), also known as DIDMOAD, is an infrequent cause of diabetes mellitus. WFS is an autosomal recessive neurodegenerative disease characterized by various clinical manifestations such as diabetes mellitus, optic atrophy, diabetes insipidus, deafness, neurological symptoms, renal tract abnormalities, psychiatric disorders, and gonadal disorders. The majority of patients with WFS carry the loss of function mutations in the WFS1 gene. The exons 2-8 of the WFS1 gene from one Chinese WFS patient were amplified by the polymerase chain reaction (PCR), subcloning techniques and direct sequence determination was applied to the amplified fragments. The compound heterozygous mutation of a 3-bp (GAC) deletion (V434del) and another compound heterozygous mutation (G-->N)(W666X) in exon 8 of WFS1 gene was identified in the patient. Other seventeen members of her family were investigated. Four cases with heterozygotes had been found through screening for the mutation V434del and five cases for the mutation W666X in the whole family. This is the first report of WFS with the mutation V434del and W666X in the WFS1 gene.
Hong
Jie
J
Department of Endocrine and Metabolic Diseases, Shanghai Key Laboratory for Endocrine Tumors, Shanghai JiaoTong University School of Medicine, Shanghai, 200025, People's Republic of China.
Zhang
Yu-Wen
YW
Zhang
Hui-Jie
HJ
Jia
Hui-Ying
HY
Zhang
Yu
Y
Ding
Xiao-Yi
XY
Zhou
Dan-Yang
DY
Chen
Hui-Ping
HP
Jiang
Xiao-Hua
XH
Cui
Bin
B
Li
Xiao-Ying
XY
Ning
Guang
G
D000293:Adolescent; D001284:Atrophy; D001483:Base Sequence; D002681:China; D003919:Diabetes Insipidus / Q000175:diagnosis / Q000235:genetics; D003922:Diabetes Mellitus, Type 1 / Q000175:diagnosis / Q000235:genetics; D005091:Exons / Q000235:genetics; D005260:Female; D017353:Gene Deletion; D006579:Heterozygote; D006801:Humans; D008279:Magnetic Resonance Imaging; D008565:Membrane Proteins / Q000235:genetics*; D008969:Molecular Sequence Data; D009154:Mutation / Q000235:genetics*; D009900:Optic Nerve / Q000473:pathology; D010375:Pedigree; D017354:Point Mutation / Q000235:genetics; D016133:Polymerase Chain Reaction; D014929:Wolfram Syndrome / Q000175:diagnosis / Q000235:genetics*
D008565:Membrane Proteins; C114987:wolframin protein