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01.09.2009 | Preclinical study

Genomic instability demonstrates similarity between DCIS and invasive carcinomas

verfasst von: Christopher M. Heaphy, Marco Bisoffi, Nancy E. Joste, Kathy B. Baumgartner, Richard N. Baumgartner, Jeffrey K. Griffith

Erschienen in: Breast Cancer Research and Treatment | Ausgabe 1/2009

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Abstract

Purpose To assess telomere DNA content (TC) and the number of sites of allelic imbalance (AI) as a function of breast cancer progression. Experimental design TC and AI were determined in 54 histologically normal tissues, 10 atypical ductal hyperplasias (ADH), 122 in situ ductal carcinomas (DCIS) and 535 invasive carcinomas (Stage I–IIIA). Results TC was altered in ADH lesions (20%), DCIS specimens (53%) and invasive carcinomas (51%). The mean number of sites of AI was 0.26 in histologically normal group tissue, increased to 1.00 in ADH, 2.94 in DCIS, and 3.07 in invasive carcinomas. All groups were statistically different from the histologically normal group (P < 0.001 for each); however, there was no difference between DCIS and the invasive groups. Conclusions Genomic instability increases in ADH and plateaus in DCIS without further increase in the invasive carcinomas, supporting the notion that invasive carcinomas evolve from or in parallel with DCIS.
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Metadaten
Titel
Genomic instability demonstrates similarity between DCIS and invasive carcinomas
verfasst von
Christopher M. Heaphy
Marco Bisoffi
Nancy E. Joste
Kathy B. Baumgartner
Richard N. Baumgartner
Jeffrey K. Griffith
Publikationsdatum
01.09.2009
Verlag
Springer US
Erschienen in
Breast Cancer Research and Treatment / Ausgabe 1/2009
Print ISSN: 0167-6806
Elektronische ISSN: 1573-7217
DOI
https://doi.org/10.1007/s10549-008-0165-4

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