XRCC1 Gene Polymorphism, Clinicopathological Characteristics and Stomach Cancer Survival in Thailand

Putthanachote, Nuntiput; Promthet, Supannee; Suwanrungruan, Krittika; Chopjitt, Peechanika; Wiangnon, Surapon; Chen, Li-Sheng; Yen, Ming-Fang; Chen, Tony Hsiu-Hsi

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자료유형: 학술저널

저자정보: Putthanachote, Nuntiput (Department of Epidemiology, Faculty of Public Health, Khon Kaen University) Promthet, Supannee (Cancer Unit, Khon Kaen University) Suwanrungruan, Krittika (Department of Pediatrics, Faculty of Medicine, Khon Kaen University) Chopjitt, Peechanika (College of Oral Medicine School of Oral Hygiene, Taipei Medical University) Wiangnon, Surapon (Institute of Epidemiology and Prevention Medicine, College of Public Health, National Taiwan University) Chen, Li-Sheng (Institute of Epidemiology and Prevention Medicine, College of Public Health, National Taiwan University) Yen, Ming-Fang (Clinical Microbiology Laboratory, Roi-et Hospital) Chen, Tony Hsiu-Hsi

저널정보: 아시아태평양암예방학회 Asian Pacific journal of cancer prevention : APJCP Asian Pacific journal of cancer prevention : APJCP 제16권 제14호

발행연도: 2015.1

수록면: 6,111 - 6,116 (6page)

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Background: Stomach cancer is one of leading causes of death worldwide. In Thailand, the incidence and mortality of stomach cancer are in the top ten for cancers. Effects of DNA repair gene X-ray repair cross complementary protein 1 (XRCC1) polymorphisms and clinicopathological characteristics on survival of stomach cancer in Thailand have not been previously reported. The aim of this study was to investigate the effects of XRCC1 gene and clinicopathological characteristics on survival of stomach cancer patients in Thailand. Materials and Methods: Data and blood samples were collected from 101 newly diagnosed stomach cancer cases pathologically confirmed and recruited during 2002 to 2006 and followed-up for vital status until 31 October 2012. Genotype analysis was performed using real-time PCR-HRM. The data were analyzed using the Kaplan-Meier method to yield cumulative survival curve, log-rank test to assess statistical difference of survival and Cox proportional hazard models to estimate adjusted hazard ratio. Results: The total followed-up times were 2,070 person-months, and the mortality rate was 4.3 per 100 person-months. The median survival time after diagnosis was 8.07 months. The cumulative 1-, 3-, 5-years survival rates were 40.4%, 15.2 % and 10.1 % respectively. After adjustment, tumour stage were associated with an increased risk of death (p= 0.036). The XRCC1 Gln339Arg, Arg/Arg homozygote was also associated with increased risk but statistically this was non-significant. Conclusions: In addition to tumour stage, which is an important prognostic factor affecting to the survival of stomach cancer patients, the genetic variant Gln339Arg in XRCC1 may non-significantly contribute to risk of stomach cancer death among Thai people. Larger studies with different populations are need to verify ours findings.

#XRCC1 polymorphism #survival #clinicopathological #stomach cancer #Thailand

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