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eISSN: 1643-3750

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Genetic Polymorphisms of Insulin-Like Growth Factor 1 Are Associated with Osteosarcoma Risk and Prognosis

Jianshui Mao, Genying Zhuang, Zhikang Chen

(Department of Orthopaedics, The Fourth Affiliated Hospital of Zhejiang University School of Medicine, Yiwu, Zhejiang, China (mainland))

Med Sci Monit 2017; 23:5892-5898

DOI: 10.12659/MSM.908004


BACKGROUND: Insulin-like growth factor 1 (IGF-1) gene plays an important role in bone and soft tumors. IGF-1 gene polymorphisms have been revealed to be correlated with the carcinogenesis and progression of solid malignancies. We therefore hypothesized that IGF-1 genetic polymorphisms might be associated with the risks and outcomes of osteosarcomas in Chinese individuals.
MATERIAL AND METHODS: This study included 173 conventional osteosarcoma individuals and 175 tumor-free controls. Five single nucleotide polymorphisms (SNPs) of IGF-1 (rs6214, rs6218, rs35767, rs5742612, and rs5742714) were genotyped. DNA was extracted from peripheral blood and analyzed for SNP genotyping using PCR.
RESULTS: We found that rs6218 had a predictive role for the susceptibility and progression of osteosarcoma. The presence of TC and CC genotypes of rs6218 indicated higher risk of osteosarcoma. In addition, rs6218 TC and CC genotypes were discovered to be associated with later stage and elevated risk of osteosarcoma metastasis.
CONCLUSIONS: IGF-1 polymorphisms are potential prognostic predictors of osteosarcoma susceptibility and outcomes.

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