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. 2000 Feb 21;82(6):1204–1210. doi: 10.1054/bjoc.1999.1064

Increasing chromosome 1 copy number parallels histological progression in breast carcinogenesis

M C Cummings 1, M Aubele 2, A Mattis 3, D Purdie 4, P Hutzler 2, H Höfler 2,3, M Werner 3
PMCID: PMC2363359  PMID: 10735507

Abstract

Chromosome 1 copy number in the benign breast lesions hyperplasia and atypical duct hyperplasia (ADH) was investigated using fluorescence in situ hybridization on paraffin sections. Progression of chromosome 1 changes occurring in parallel with histological progression from normal through hyperplasia and ADH to ductal carcinoma in situ (DCIS) and invasive carcinoma was also assessed, both overall and within individual patients. The mean signal number for normal cells was 1.14, while that for hyperplasia was 1.56 and ADH was 1.5, while values for DCIS of 1.95 and invasive duct carcinoma of 1.79, were higher (P< 0.001). Six of the seven cases also showed a significant trend towards an increasing proportion of cells with greater than 2 signals per nucleus occurring with histological progression (P< 0.001). These results support the concept that benign proliferative breast disease is a biological precursor of in-situ and invasive ductal carcinoma, the early histological changes possibly indicating a field effect with further genetic changes required for the development of a malignant phenotype. © 2000 Cancer Research Campaign

Keywords: chromosome 1, FISH, breast carcinoma, histopathology

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Selected References

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