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Open AccessPhenotypic changes of HER2-positive breast cancer during and after dual HER2 blockade
The HER2-enriched (HER2-E) subtype within HER2-positive (HER2+) breast cancer is highly addicted to the HER2 pathway. However, ∼20–60% of HER2+/HER2-E tumors do not achieve a complete response following anti-H...