American Association for Cancer Research
15417786mcr050128-sup-supp_figures1_4.pdf (19.79 MB)

Supplementary Figures 1-4 from Comprehensive Profiling of 8p11-12 Amplification in Breast Cancer

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posted on 2023-04-03, 18:28 authored by Véronique Gelsi-Boyer, Béatrice Orsetti, Nathalie Cervera, Pascal Finetti, Fabrice Sircoulomb, Carole Rougé, Laurence Lasorsa, Anne Letessier, Christophe Ginestier, Florence Monville, Séverine Esteyriès, José Adélaïde, Benjamin Esterni, Catherine Henry, Stephen P. Ethier, Frédéric Bibeau, Marie-Joëlle Mozziconacci, Emmanuelle Charafe-Jauffret, Jocelyne Jacquemier, François Bertucci, Daniel Birnbaum, Charles Theillet, Max Chaffanet
Supplementary Figures 1-4 from Comprehensive Profiling of 8p11-12 Amplification in Breast Cancer



In human carcinomas, especially breast cancer, chromosome arm 8p is frequently involved in complex chromosomal rearrangements that combine amplification at 8p11-12, break in the 8p12-21 region, and loss of 8p21-ter. Several studies have identified putative oncogenes in the 8p11-12 amplicon. However, discrepancies and the lack of knowledge on the structure of this amplification lead us to think that the actual identity of the oncogenes is not definitively established. We present here a comprehensive study combining genomic, expression, and chromosome break analyses of the 8p11-12 region in breast cell lines and primary breast tumors. We show the existence of four amplicons at 8p11-12 using array comparative genomic hybridization. Gene expression analysis of 123 samples using DNA microarrays identified 14 genes significantly overexpressed in relation to amplification. Using fluorescence in situ hybridization analysis on tissue microarrays, we show the existence of a cluster of breakpoints spanning a region just telomeric to and associated with the amplification. Finally, we show that 8p11-12 amplification has a pejorative effect on survival in breast cancer. (Mol Cancer Res 2005;3(12):655–67)

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