TY - JOUR
T1 - A germline missense mutation in COQ6 is associated with susceptibility to familial schwannomatosis
AU - Zhang, Keqiang
AU - Lin, Jia Wei
AU - Wang, Jinhui
AU - Wu, Xiwei
AU - Gao, Hanlin
AU - Hsieh, Yi Chen
AU - Hwu, Peter
AU - Liu, Yun Ru
AU - Su, Leila
AU - Chiou, Hung Yi
AU - Wang, Daidong
AU - Yuan, Yate Ching
AU - Whang-Peng, Jacqueline
AU - Chiu, Wen Ta
AU - Yen, Yun
PY - 2014/10/1
Y1 - 2014/10/1
N2 - PURPOSE: Schwannomatosis, a subtype of neurofibromatosis, is characterized by multiple benign, nonvestibular, nonintradermal schwannomas. Although the tumor suppressor SMARCB1 gene has been frequently identified as the underlying genetic cause of half of familial and ~10% of sporadic schwannomatosis, for most other cases, further causative genes remain to be discovered. Herein, we characterize the genome of a schwannomatosis family without constitutional inactivation of the SMARCB1 gene to explore novel genomic alterations predisposing individuals to the familial disease.METHODS: We performed whole-genome/exome sequencing on genomic DNA of both schwannomatosis-affected and normal members of the family.RESULTS: We identified a novel missense mutation (p.Asp208His; c.622G>C) in the coenzyme Q10 (CoQ10) biosynthesis monooxygenase 6 gene (COQ6) in schwannomatosis-affected members. The deleterious effects of the COQ6 mutations were validated by their lack of complementation in a coq6-deficient yeast mutant. Our study further indicated that the resultant haploinsufficiency of COQ6 might lead to CoQ10 deficiency and chronic overproduction of reactive oxygen species in Schwann cells.CONCLUSION: Although the exact oncogenetic mechanisms in this schwannomatosis family remain to be elucidated, our data strongly indicate a probable role of COQ6 mutation and CoQ10 deficiency in the development of familial schwannomatosis.Genet Med 16 10, 787-792.
AB - PURPOSE: Schwannomatosis, a subtype of neurofibromatosis, is characterized by multiple benign, nonvestibular, nonintradermal schwannomas. Although the tumor suppressor SMARCB1 gene has been frequently identified as the underlying genetic cause of half of familial and ~10% of sporadic schwannomatosis, for most other cases, further causative genes remain to be discovered. Herein, we characterize the genome of a schwannomatosis family without constitutional inactivation of the SMARCB1 gene to explore novel genomic alterations predisposing individuals to the familial disease.METHODS: We performed whole-genome/exome sequencing on genomic DNA of both schwannomatosis-affected and normal members of the family.RESULTS: We identified a novel missense mutation (p.Asp208His; c.622G>C) in the coenzyme Q10 (CoQ10) biosynthesis monooxygenase 6 gene (COQ6) in schwannomatosis-affected members. The deleterious effects of the COQ6 mutations were validated by their lack of complementation in a coq6-deficient yeast mutant. Our study further indicated that the resultant haploinsufficiency of COQ6 might lead to CoQ10 deficiency and chronic overproduction of reactive oxygen species in Schwann cells.CONCLUSION: Although the exact oncogenetic mechanisms in this schwannomatosis family remain to be elucidated, our data strongly indicate a probable role of COQ6 mutation and CoQ10 deficiency in the development of familial schwannomatosis.Genet Med 16 10, 787-792.
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U2 - 10.1038/gim.2014.39
DO - 10.1038/gim.2014.39
M3 - Article
C2 - 24763291
AN - SCOPUS:84926460576
SN - 1098-3600
VL - 16
SP - 787
EP - 792
JO - Genetics in Medicine
JF - Genetics in Medicine
IS - 10
ER -