Metabolism and DNA adduct formation are critical in cancer induction by NNK. The investigators goal is to understand whether the observed ethnic/racial differences in lung cancer incidence are due to variations in NNK metabolism. The investigators overall hypothesis is that cancer susceptibility relates to carcinogen dose and to the balance between carcinogen metabolic activation and detoxification. The investigators propose to test this hypothesis via investigation of potential differences in NNK metabolic activation and detoxification in African American and European American smokers.
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Conduct a comprehensive analysis of urinary biomarkers of NNK metabolic activation and detoxification in African American and European American smokers.
Timeframe: 10 days