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Association of polymorphisms in the MTH1 gene with small cell lung carcinoma risk
Takashi Kohno1, Tokuki Sakiyama, Hideo Kunitoh
1Center for Medical Genomics, Tokyo, Japan.
Abstract:
Fifty single-nucleotide polymorphisms (SNPs) associated with amino acid changes in 36 genes involved in diverse DNA repair pathways were assessed for associations with risk for small cell lung carcinoma (SCLC) by a case-control study consisting of 211 SCLC cases and 685 controls. An SNP, Val83Met, in the MTH1 (microtT homolog 1) gene encoding a triphosphatase that hydrolyzes pro-mutagenic oxidized nucleoside triphosphates, such as 8-hydroxy-dGTP and 2-hydroxy-dATP, showed the strongest and a significant association with SCLC risk [odds ratio (OR)=1.6, 95% confidence interval (CI): 1.2-2.2, P=0.004], while three other SNPs in the TP53, BLM and SNM1 genes, respectively, also showed marginal associations (0.05
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