Frequent alterations of HER2 through mutation, amplification, or overexpression in pleomorphic lobular carcinoma of the breast.

Abstract excerpt

Mutations in HER2 gene have been identified in a small subset of breast cancer cases. Identification of HER2 mutation has therapeutic implications for breast cancer, but whether a subgroup of breast cancer with a higher frequency of HER2 mutation exists, remains unknown. We analyzed HER2 mutation and pathologic factors on 73 formalin-fixed, paraffin-embedded samples, including 21 pleomorphic invasive lobular...

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