Kataegis Expression Signature in Breast Cancer Is Associated with Late Onset, Better Prognosis, and Higher HER2 Levels.

Abstract excerpt

Kataegis is a mutational process observed in ∼55% of breast tumors that results in hypermutation in localized genomic regions. Using whole-genome sequence data of 97 tumors, we examined the distribution of kataegis loci, showing that these somatic mutations are over-represented on chromosomes 8, 17, and 22 and enriched in genic regions and active chromatin elements. We show that tumors harboring kataegis are...

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