Genetic Variation in GSTP1, Lung Function, Risk of Lung Cancer, and Mortality

J Thorac Oncol. 2017 Nov;12(11):1664-1672. doi: 10.1016/j.jtho.2017.07.008. Epub 2017 Jul 21.


Introduction: Glutathione S-transferase pi 1 metabolizes carcinogens from tobacco smoke in the lung. We tested whether genetically altered glutathione S-transferase pi 1 activity affects lung function and risk for tobacco-related cancer and mortality in the general population.

Methods: We genotyped 66,069 individuals from the white general population for two common functional variants in the glutathione S-transferase pi 1 gene (GSTP1)-amino acid isoleucine 105 changed to a valine (Ile105Val) and amino acid alanine 114 changed to a valine (Ala114Val)-and recorded lung function, lung cancer, tobacco-related cancer, and death as outcomes.

Results: Lung function was increased stepwise with the Ile105Val genotype overall (p < 0.01) and among smokers separately (p < 0.01). Adjusted hazard ratios for lung cancer, tobacco-related cancer, and death were reduced stepwise with the Ile105Val genotype (p < 0.02): Ile105Val homozygotes and heterozygotes versus noncarriers had hazard ratios for lung cancer of 0.64 (0.47-0.89) and 0.93 (0.78-1.11), for tobacco-related cancer of 0.74 (0.60-0.92) and 0.92 (0.81-1.04), and hazard ratios for death of 0.87 (0.80-0.95) and 0.94 (0.89-0.99), respectively. Population prevented fractions of lung cancer, tobacco-related cancer, and death due to Ile105Val homozygosity were 4%, 3% and 2%, respectively. The Ala114Val genotype was associated with reduced mortality (p < 0.01) but not with lung function, lung cancer, or tobacco-related cancer.

Conclusion: GSTP1 Ile105Val was associated with increased lung function, reduced risk for lung cancer and tobacco-related cancer, and reduced all-cause mortality in the general population.

Keywords: Genetics; Glutathione S-transferase; Lung cancer; Prognosis; Tobacco-related cancer.

MeSH terms

  • Aged
  • Female
  • Genetic Variation
  • Genotype
  • Glutathione S-Transferase pi / genetics*
  • Glutathione S-Transferase pi / metabolism
  • Humans
  • Lung Neoplasms / etiology*
  • Lung Neoplasms / genetics*
  • Lung Neoplasms / mortality
  • Male
  • Middle Aged
  • Respiratory Function Tests
  • Risk Factors


  • GSTP1 protein, human
  • Glutathione S-Transferase pi