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Human Lung Cancer Chemoprevention Strategies*: Parker B. Francis Lecture

Gilbert S. Omenn, MD, PhD
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*From the University of Michigan, Ann Arbor, MI.

Correspondence to: Gilbert S. Omenn, MD, PhD, Professor of Internal Medicine, Human Genetics, and Public Health, A510C MSRB I, University of Michigan, Ann Arbor, MI, 48109-0656; e-mail: gomenn@umich.edu



Chest. 2004;125(5_suppl):123S-127S. doi:10.1378/chest.125.5_suppl.123S
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Pharmacologic or nutritional prevention of lung cancers is needed, especially for 60 million Americans who are former smokers. A portfolio of large-scale trials of beta-carotene, beta-carotene with and without vitamin E, and beta-carotene plus vitamin A demonstrated no benefit whatsoever from beta-carotene. The α-Tocopherol/β-Carotene Trial and the β-Carotene and Retinol Efficacy Trial found significant increases in lung cancer risk and total mortality. Laboratory research soon identified multiple adverse molecular effects. Nevertheless, chemoprevention remains an active, promising strategy, with new hypotheses and new candidate agents, including many already approved as therapies. The most active area currently is focused on selective inhibition of arachidonic metabolism, both Cox-2 and Lox pathways.


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