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. 1997 Apr;150(4):1465–1471.

Genetic changes in intraductal breast cancer detected by comparative genomic hybridization.

T Kuukasjärvi 1, M Tanner 1, S Pennanen 1, R Karhu 1, O P Kallioniemi 1, J Isola 1
PMCID: PMC1858157  PMID: 9095001

Abstract

Ductal carcinoma in situ (DCIS) is considered a direct precursor of invasive ductal breast cancer (IDC). We combined tissue microdissection and comparative genomic hybridization to identify genetic changes in five DCIS lesions with no invasion and in two that were adjacent to IDC. Extensive genetic changes characterized pure DCIS cases with gains of 1q, 6q, 8q, and Xq as well as losses of 17p and chromosome 22 being most often involved. Except for the Xq gain, these changes are also common to IDC. Separate analysis of DCIS and IDC components in the same tumor revealed an almost identical pattern of genetic changes in one case, whereas substantial differences were found in another. We conclude that many of the common genetic changes in IDC may take place before development of invasive growth. However, a simple linear progression model may not always account for the DCIS-IDC transition.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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