© 2005 Oxford University Press
EDITORIAL |
RAR
1': Primed To Fight Retinoid Resistance in Lung Carcinogenesis
Affiliations of authors: Departments of Clinical Cancer Prevention (ALS, XX, SML) and Thoracic/Head and Neck Medical Oncology (ALS, SML), The University of Texas M. D. Anderson Cancer Center, Houston
Correspondence to: Anita L. Sabichi, MD, Department of Clinical Cancer PreventionUnit 1360, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd., P.O. Box 301439, Houston, TX 77230-1439 (e-mail: asabichi@mdanderson.org).
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Retinoids (vitamin A and its natural and synthetic analogues) have a strong preclinical record of anticarcinogenic activity in a broad range of tissue types (1). The promise of this record, however, has not been realized in clinical trials of retinoids in preventing lung cancers. The inability of retinoids to prevent second primary lung cancers in the phase III European Study on Chemoprevention with Vitamin A and N-Acetylcysteine (EUROSCAN) (2) and the Lung Intergroup Trial (LIT) (3) has substantially dampened the enthusiasm for further exploring retinoids for lung cancer treatment and prevention. The provocative article by Petty et al. (4) on a new retinoid receptor and retinoid resistance in lung