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It remains controversial as to whether low- and high-grade invasive ductal breast cancers are related by progression through grade, or generally follow distinct genetic pathways. It has previously been shown by comparative genomic hybridization (CGH) that the latter is more likely to be correct, based on the high frequency of chromosome 16q deletion in grade I cancers, but not in grade III. This study used microsatellite markers on 16q to confirm the differences between grade I and grade III tumours and to exclude the possibility that grade III tumours generally arise from grade I tumours through a process involving regain of 16q. The concordance between the CGH and microsatellite data is good but imperfect, probably reflecting the different sensitivities and specificities of the two techniques and the varying mechanisms of allele loss in each tumour type.

Original publication

DOI

10.1002/path.1006

Type

Journal article

Journal

J Pathol

Publication Date

01/2002

Volume

196

Pages

32 - 36

Keywords

Allelic Imbalance, Breast Neoplasms, Carcinoma, Ductal, Breast, Chromosomes, Human, Pair 16, Female, Genetic Markers, Humans, Microsatellite Repeats, Neoplasm Invasiveness, Nucleic Acid Hybridization