Genetic Variations in the HIF1A Gene Modulate Response to Adjuvant Chemotherapy after Surgery in Patients with Colorectal Cancer

Zhang, Yi; Wang, Peng; Zhou, Xing-Chun; Bao, Guo-Qiang; Lyu, Zhuo-Ming; Liu, Xiao-Nan; Wan, Shao-Gui; He, Xian-Li; Huang, Qi-Chao

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자료유형: 학술저널

저자정보: Zhang, Yi (State Key Laboratory of Cancer Biology, Cell Engineering Research Center & Department of Cell Biology, Fourth Military Medical University) Wang, Peng (State Key Laboratory of Cancer Biology and Experimental Teaching Center of Basic Medicine, Fourth Military Medical University) Zhou, Xing-Chun (State Key Laboratory of Cancer Biology and Experimental Teaching Center of Basic Medicine, Fourth Military Medical University) Bao, Guo-Qiang (Department of General Surgery, Tangdu Hospital, Fourth Military Medical University) Lyu, Zhuo-Ming (Department of Pain, Tangdu Hospital, Fourth Military Medical University) Liu, Xiao-Nan (Xijing Hospital of Digestive Disease, Fourth Military Medical University) Wan, Shao-Gui (Institute of Pharmacy, Pharmaceutical College of Henan University) He, Xian-Li (Department of General Surgery, Tangdu Hospital, Fourth Military Medical University) Huang, Qi-Chao (State Key Laboratory of Cancer Biology and Experimental Teaching Center of Basic Medicine, Fourth Military Medical University)

저널정보: 아시아태평양암예방학회 Asian Pacific journal of cancer prevention : APJCP Asian Pacific journal of cancer prevention : APJCP 제15권 제11호

발행연도: 2014.1

수록면: 4,637 - 4,642 (6page)

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Background: Hypoxia-inducible factor $1{\alpha}$ (HIF-$1{\alpha}$) plays an important role in regulating cell survival and angiogenesis, which are critical for tumor growth and metastasis. Genetic variations of HIF1A have been shown to influence the susceptibility to many kinds of human tumors. Increased expression of HIF-$1{\alpha}$ has also been demonstrated to be involved in tumor progression. However, the prognostic value of single nucleotide polymorphisms (SNPs) inthe HIF1A gene remains to be determined in most cancer types, including colorectal cancer (CRC). In this study, we sought to investigate the predictive role of HIF1A SNPs in prognosis of CRC patients and efficacy of chemotherapy. Materials and Methods: We genotyped two functional SNPs in HIF1A gene using the Sequenom iPLEX genotyping system and then assessed their associations with clinicopathological parameters and clinical outcomes of 697 CRC patients receiving radical surgery using Cox logistic regression model and Kaplan Meier curves. Results: Generally, no significant association was found between these 2 SNPs and clinical outcomes of CRC. In stratified analysis of subgroup without adjuvant chemotherapy, patients carrying CT/TT genotypes of rs2057482 exhibited a borderline significant association with better overall survival when compared with those carrying CC genotype [Hazard ratio (HR), 0.47; 95% confidence interval (95% CI): 0.29-0.76; P < 0.01]. Moreover, significant protective effects on CRC outcomes conferred by adjuvant chemotherapy were exclusively observed in patients carrying CC genotype of rs2057482 and in those carrying AC/CC genotype of rs2301113. Conclusions: Genetic variations in HIF1A gene may modulate the efficacy of adjuvant chemotherapy after surgery in CRC patients.

#HIF1A #single nucleotide polymorphism #prognosis #colorectal cancer #adjuvant chemotherapy

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