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Screening for p53 Gene Mutations in Archived Tumors of Workers Occupationally Exposed to Carcinogens: Examples from Analysis of Bladder Tumors

Esteve Asunción PhD; Sørlie, Therese MS; Martel-Planche, Ghyslaine MS; Hollstein, Monica PhD; Kusters, Inca MS; Lewalter, Jürgen MD; Vineis, Paolo MD; Stephan-Odenthal, Manfred MD; Montesano, Ruggero MD, PhD
Journal of Occupational and Environmental Medicine: January 1995
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Point mutations in the p53 tumor suppressor gene are the most common genetic alterations in human cancers. The nature and location of these mutations can be informative in assessing the importance of putative carcinogenic agents. Potential associations between a given carcinogen and a specific mutation pattern can be substantiated when the exposure history of the patients is known. While the past exposure to environmental risk factors is often difficult to determine, documented occupational exposure to carcinogens presents a unique situation for evaluating this approach. Analysis usually involves working with paraffin-embedded tissues, fixed under conditions suboptimal for genetic analysis and stored for many years, since frozen tissues are not available in sufficient numbers. The particular methodological problems encountered with fixed samples are discussed here, using as illustration an ongoing study of oncogene and tumor suppressor gene mutations in archived bladder tumors of workers exposed to aromatic amines and nonexposed patients.

© Williams & Wilkins 1995. All Rights Reserved.