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  • Title: Novel mutations in the PATCHED gene in basal cell nevus syndrome.
    Author: Lam CW, Leung CY, Lee KC, Xie J, Lo FM, Au TS, Tong SF, Poon MK, Chan LY, Luk NM.
    Journal: Mol Genet Metab; 2002 May; 76(1):57-61. PubMed ID: 12175781.
    Abstract:
    Basal cell nevus syndrome (BCNS) is an autosomal dominant disease characterized by the presence of multiple basal cell carcinomas, odontogenic keratocysts, palmoplantar pits, and calcification in the falx cerebri caused by mutational inactivation of the PTCH gene. To investigate the molecular basis of BCNS in Chinese, we did a mutational analysis of the PTCH gene by performing denaturing high-performance liquid chromatography in three BCNS families. In this study, three novel mutations, two 1-bp frameshift insertions, i.e., 1468insA and 2392insC, and one 8-bp deletion, i.e., IVS5 + 1delGTAAGTGT, affecting a donor splice site, were identified. All the mutations cause a shift of the open reading frames and lead to premature termination of PTCH protein translation. Our results showed that mutational inactivation of the PTCH gene causes BCNS in Chinese.
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