Abstract
Although race, in and of itself, is not a relevant biologic variable, racial differences in disease characteristics and outcomes have been reported in many malignancies, including lung cancer. The lung cancer incidence rate in blacks has been consistently higher than that in whites for many years. This racial disparity is seen primarily in men and is significantly greater in younger age groups. The reason for higher lung cancer incidence rates in blacks remains unclear, but racial differences in smoking habits, socioeconomic variables, and the metabolism of tobacco carcinogens may all play an important role. Blacks are also more likely than whites to present with squamous cell carcinoma and with advanced-stage disease. A significant racial difference in survival rates has developed over the past 30 years, with a poorer prognosis noted in black patients, particularly those with local- and regional-stage disease. This disparity appears to be due to a lack of improvement in the survival of black patients with lung cancer, but the biological and/or societal basis for racial variations in survival have not been determined. In summary, significant racial differences exist in lung cancer incidence and survival rates. Further research is required to determine the factors responsible for these differences and to develop effective preventative and therapeutic interventions that will impact favorably on the incidence and prognosis of this disease.
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Gadgeel, S.M., Kalemkerian, G.P. Racial differences in lung cancer. Cancer Metastasis Rev 22, 39–46 (2003). https://doi.org/10.1023/A:1022207917249
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DOI: https://doi.org/10.1023/A:1022207917249