CYP1A1 and GSTM1 polymorphisms and oral cancer risk

Jong Y. Park, Joshua E. Muscat, Qing Ren, Stimson P. Schantz, Robert D. Harwick, Jordan C. Stern, Virginia Pike, John P. Richie, Philip Lazarus

Research output: Contribution to journalArticlepeer-review

139 Scopus citations

Abstract

The importance of both the CYP1A1 exon 7 (ile:val) and GSTM1 (0/0) polymorphisms in oral cancer susceptibility was assessed by examining polymorphic prevalences in 135 patients with oral cancer and 135 noncancer controls frequency-matched by age at diagnosis (± 5 years), race, sex, and institute of patient recruitment. The prevalence of the GSTM1 (0/0) genotype was approximately 51% in both cases and controls. The prevalence of the CYP1A1 (ile:val) polymorphism [including both the (ile/val) and (val/val) genotypes] was significantly higher in cases as compared to controls (17.6% versus 7.6%, respectively; crude odds ratio, 2.6; confidence interval, 1.2- 5.7). No association was observed between polymorphic prevalence and levels of smoking or alcohol consumption in cases. These results suggest that the GSTM1 null genotype is not associated with oral cancer risk. These results also suggest that individuals with the CYP1A1 exon 7 ile:val polymorphism are at increased risk for oral cancer, and that this risk may not be influenced by differences in exposure to tobacco smoke.

Original languageEnglish (US)
Pages (from-to)791-797
Number of pages7
JournalCancer Epidemiology Biomarkers and Prevention
Volume6
Issue number10
StatePublished - 1997

All Science Journal Classification (ASJC) codes

  • Epidemiology
  • Oncology

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