Are estrogen receptor-positive breast cancers in BRCA1 mutation carriers sporadic?

Breast Cancer Res · 2010 · PMC2879558 · PMID 20346095

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showed a trendno p-value reported

Finally, the ER-positive tumors in BRCA1 carriers were different to sporadic/control ER-positive cancers, showed a trend towards higher grade and mitotic activity, and were predominantly ductal carcinoma - no special type.

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