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Frequent microsatellite alterations at chromosomes 9p21 and 3p14 in oral premalignant lesions and their value in cancer risk assessment

Nature Medicine volume 2, pages 682–685 (1996)Cite this article

Abstract

To better understand genetic alterations in oral premalignant lesions, we examined 84 oral leukoplakia samples from 37 patients who had been enrolled in a chemoprevention trial. The samples were analyzed for two microsatellite markers located at chromosomes 9p21 and 3p14. Loss of heterozygosity (LOH) at either or both loci was identified in 19 of the 37 (51%) patients. Of these 19 patients, seven (37%) have developed head and neck squamous cell carcinoma (HNSCC) while only one of 18 (6%) of patients without LOH developed HNSCC. Our data suggest that clonal genetic alterations are common in oral premalignant lesions; that multiple genetic alterations have already occurred in oral premalignant lesions, allowing at least a focal clonal expansion; and that losses of the 9p21 and 3p14 regions may be related to early processes of tumorigenesis in HNSCC. These genetic alterations in premalignant tissues may serve as markers for cancer risk assessment.

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Authors and Affiliations

  1. Departments of Thoracic/Head and Neck Medical Oncology, The University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas, 77030, USA

    Li Mao, Jin S. Lee, You H. Fan, Scott Lippman & Waun K. Hong

  2. Pathology, The University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas, 77030, USA

    Jae Y. Ro & John G. Batsakis

  3. Clinical Investigation, The University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas, 77030, USA

    Li Mao & Walter Hittelman

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Mao, L., Lee, J., Fan, Y. et al. Frequent microsatellite alterations at chromosomes 9p21 and 3p14 in oral premalignant lesions and their value in cancer risk assessment. Nat Med 2, 682–685 (1996). https://doi.org/10.1038/nm0696-682

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