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  • Title: [Novel mutations of XPC gene detected in a family affected with xeroderma pigmentosum group C].
    Author: Wang L, Huang S, Li J, Zou Y, Xu P, Gao M, Kang R, Xie H, Wei X, Niu Y, Liu X, Gao Y.
    Journal: Zhonghua Yi Xue Yi Chuan Xue Za Zhi; 2018 Aug 10; 35(4):540-543. PubMed ID: 30098252.
    Abstract:
    OBJECTIVE: To detect mutations of the XPC (XPC complex subunit, DNA damage recognition and repair factor) gene in a family affected with xeroderma pigmentosum group C (XP-C). METHODS: The patient was subjected to next-generation sequencing and Sanger sequencing. Suspected mutations were validated by Sanger sequencing. Effect of splicing mutation was confirmed by reverse transcription-PCR (RT-PCR). RESULTS: Compound heterozygous mutations of c.2098G to T and c.2034-7_2040del were found in the XPC gene in the proband. Among these, c.2098G to T (p.G700X) is a nonsense mutation resulting in a truncated XPC protein. C.2034-7_2040del involves the -1 position, which may alter the splice donor site of the intron 11 of XPC and result in a truncated XPC protein with loss of amino acids from 940 to 679 positions. The two mutations were not detected among 100 unrelated healthy controls. CONCLUSION: Mutations of c.2098 G to T and c.2034-7_2040del of the XPC gene may lead to abnormal XPC expression and reduction or elimination of normal XPC functions, which may underlie the disease in this family.
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