Predictive Impact of Common Variations in DNA Repair Genes on Clinical Outcome of Osteosarcoma

  • Bai, Sheng-Bin (Department of Anatomy & Neurobiology, Xiangya School of Medicine, Central South University) ;
  • Chen, Hong-Xiang (Department of Gynecology, The People Hospital of Xinjiang Autonomous Region) ;
  • Bao, Yong-Xing (Department of Tumor Center, the First Affiliated Hospital, Xinjiang Medical University) ;
  • Luo, Xue-Gang (Department of Anatomy & Neurobiology, Xiangya School of Medicine, Central South University) ;
  • Zhong, Jin-Jie (Department of Histology and Embryology, Xinjiang Medical University)
  • Published : 2013.06.30


We aimed to assess the role of XPG, XPC and MMS19L polymorphisms on response to chemotherapy in osteosarcomas, and the clinical outcomes. One hundred and eighty five osteosarcoma patients who were histologically confirmed were enrolled in our study between January 2007 and December 2009. Genotyping of XPG, XPC and MMS19L was performed in a 384-well plate format on the MassARRAY$^{(R)}$ platform. Individuals with XPG TT genotype and T allele were more likely to be better response to chemotherapy than CC genotype, with the OR (95% CI) of 4.17 (1.64-11.54) and 2.66 (1.39-5.11), respectively. Those carrying MMS19L TT genotype and T allele showed better response to chemotherapy, with ORs (95% CI) of 4.8 (1.56-17.7) and 2.3 (1.22-4.36), respectively. Patients carrying TT genotype of XPG and MMS19L showed a significantly longer overall survival than CC genotype, with a 0.47 and 0.30-fold risk of death when compared with the wild-type of the gene. XPG and MMS19L are correlated with response to chemotherapy and prognosis of osteosarcoma, so that they could be used as predictive markers for prognosis.


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