Would you treat an ER/PR+ inflammatory breast cancer that is HER2 2+ by IHC but 5% positive by FISH as HER2 positive?
2 populations of cells with 95% negative by FISH (ratio 1.07) and 5% positive by FISH (ratio 10)
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Would you offer HER2 directed neoadjuvant chemotherapy in a patient with ER/PR+ inflammatory breast cancer that has HER2+ by FISH in 5% of cells?
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1 Answer
Mednet MemberInvited Expert
Medical Oncology · Duke University
Answered on
Yes, because it is inflammatory breast cancer and the standard of care is to include neoadjuvant chemotherapy anyway. In this case, I'd use neoadjuvant TCHP and then retest breast biomarkers at surgery (MRM, with ALND, is standard surgery for inflammatory breast cancer at this time) to see if there ...
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