High Susceptibility to Lung Cancer Analyzed in Terms of Combined Genotypes of P450IA1 and Mu‐class Glutathione S‐Transferase Genes

Shinichi Hayashi, Junko Watanabe, Kaname Kawajiri

Research output: Contribution to journalArticlepeer-review

321 Citations (Scopus)

Abstract

Lung cancer is closely associated with cigarette smoking. Aromatic hydrocarbons in smoke, including benzo[n]pyrene, first require metabolic activation by Phase I enzymes, cytochrome P450, to their ultimate forms, and these activated forms are then subjected to detoxification by Phase II enzymes, especially glutathione S‐transferases. Thus, genetically determined susceptibility to lung cancer may depend on the metabolic balance between Phase I and Phase II enzymes. In this study, we identified individuals genetically at high risk of lung cancer in terms of polymorphisms of the P450IA1 gene and GST1 gene. The relative risk of individuals with a combination of the genotypes of both a homozygous rare allele of the P450IA1 gene and the nulled GST1 gene was remarkably high at 5.8 for lung cancer and 9.1 for squamous cell carcinoma compared with other combinations of genotypes.

Original languageEnglish
Pages (from-to)866-870
Number of pages5
JournalJapanese Journal of Cancer Research
Volume83
Issue number8
DOIs
Publication statusPublished - 1992 Aug

Keywords

  • Genetic polymorphism — P450
  • Glutathione S‐transferase
  • Human
  • Key words
  • Lung cancer

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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