Carcinogenesis Advance Access originally published online on April 15, 2009
Carcinogenesis 2009 30(6):987-990; doi:10.1093/carcin/bgp090
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Common genetic variants on 5p15.33 contribute to risk of lung adenocarcinoma in a Chinese population
1 Department of Epidemiology and Biostatistics, Cancer Center, Nanjing Medical University, 140 Hanzhong Road, Nanjing 210029, China
2 Department of Thoracic Surgery, Jiangsu Cancer Hospital, Nanjing 210009, China
3 Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
* To whom correspondence should be addressed. Tel/Fax: +86 25 8686 2756; Email: hbshen{at}njmu.edu.cn
Chromosome 5p15.33, containing TERT and CLPTM1L genes, was recently identified as one of the susceptible regions for lung cancer in Caucasian populations. We hypothesized that single-nucleotide polymorphisms (SNPs) identified in this region in Caucasians are also important in the development of lung cancer in Chinese population. To test this hypothesis, we genotyped two most significant SNPs reported in Caucasians, rs2736100A/C and rs402710C/T at 5p15.33, in a case–control study with 1221 non-small cell lung cancer (NSCLC) cases and 1344 cancer-free controls in a Chinese population. We found that rs2736100C allele in TERT gene was associated with a significantly increased risk of NSCLC with adjusted odds ratios of 1.26 [95% confidence interval (CI) = 1.05–1.51] and 1.31 (95% CI = 1.04–1.66) for one or two copies of the variant C allele, respectively. This significant association was more prominent among female (P for heterogeneity: 0.044), non-smokers (P for heterogeneity: 0.054) and/or the subjects with adenocarcinoma (P for heterogeneity: 0.058). However, no significant association was found between rs402710C/T and NSCLC risk. These results suggest that genetic variants in 5p15.33, especially in TERT gene, may also predispose the susceptibility of lung cancer, especially adenocarcinoma, in Chinese population.
Abbreviations: CI, confidence interval; LD, inkage disequilibrium; NSCLC, non-small cell lung cancer; OR, odds ratio; PCR, polymerase chain reaction; SNP, single-nucleotide polymorphism
These authors contributed equally to this work. Received January 21, 2009; revised March 2, 2009; accepted April 7, 2009.
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