Journal of Experimental & Clinical Cancer Research 2009, 28:153 http://www.jeccr.com/content/28/1/153 15. Benhamou S, Sarasin A: ERCC2/XPD gene polymorphisms and cancer risk. Mutagenesis 2002, 17:463-469. 16. Coin F, Marinoni JC, Rodolfo C, Fribourg S, Pedrini AM, Egly JM: Mutations in the XPD helicase gene result in XP and TTD phenotypes, preventing interaction between XPD and the p44 subunit of TFIIH. Nat Genet 1998, 20:184-188. 17. Lunn RW, Helzlsouer KJ, Parshad R, Umbach DM, Harris EL, Sanford KK, Bell DA: XPD polymorphisms: effect on DNA repair pro- ficiency. Carcinogenesis 2000, 21:551-555. 18. Hou SM, Falt S, Angelini S, Yang K, Nyberg F, Lambert B, Hemminki K: The XPD variant alleles are associated with increased aro- matic DNA adduct level and lung cancer risk. Carcinogenesis 2002, 23:599-603. 19. Au WW, Salama SA, Sierra-Torres CH: Functional characteriza- tion of polymorphisms in DNA repair genes using cytoge- netic challenge assays. Environ Health Perspect 2003, 111:1843-1850. 20. Spitz MR, Wu X, Wang Y, Wang LE, Shete S, Amos CI, Guo Z, Lei L, Mohrenweiser H, Wei Q: Modulation of nucleotide excision repair capacity by XPD polymorphisms in lung cancer patients. Cancer Res 2001, 61:1354-1357. 21. Yin J, Vogel U, Ma Y, Guo L, Wang H, Qi R: Polymorphism of the DNA repair gene ERCC2 Lys751Gln and risk of lung cancer in a northeastern Chinese population. Cancer Genet Cytogenet 2006, 169:27-32. 22. Zienolddiny S, Campa D, Lind H, Ryberg D, Skaug V, Stangeland L, Phillips DH, Canzian F, Haugen A: Polymorphisms of DNA repair genes and risk of non-small cell lung cancer. Carcinogenesis 2006, 27:560-567. 23. Park JY, Lee SY, Jeon HS, Park SH, Bae NC, Lee EB, Cha SI, Park JH, Kam S, Kim IS, Jung TH: Lys751Gln polymorphism in the DNA repair gene XPD and risk of primary lung cancer. Lung cancer 2002, 36:15-16. 24. Chen S, Tang D, Xue K, Xu L, Ma G, Hsu Y, Cho SS: DNA repair gene XRCC1 and XPD polymorphisms and risk of lung can- cer in a Chinese population. Carcinogenesis 2002, 23:1321-1325. 25. Yin J, Vogel U, Ma Y, Qi R, Sun Z, Wang H: A haplotype encom- passing the variant allele of DNA repair gene polymorphism ERCC2/XPD Lys751Gln but not the variant allele of Asp312Asn is associated with risk of lung cancer in a north- eastern Chinese population. Cancer Genet Cytogenet 2007, 175:47-51. Publish with Bio Med Central and every scientist can read your work free of charge "BioMed Central will be the most significant development for disseminating the results of biomedical research in our lifetime." Sir Paul Nurse, Cancer Research UK Your research papers will be: available free of charge to the entire biomedical community peer reviewed and published immediately upon acceptance cited in PubMed and archived on PubMed Central yours — you keep the copyright Submit your manuscript here: http://www.biomedcentral.com/info/publishing_adv.asp BioMedcentral Page 7 of 7 (page number not for citation purposes)