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<p>We present a unique case of locally advanced, inflammatory hormone receptor (HR) positive, human epidermal growth factor receptor 2 (HER2)-negative breast cancer in a young woman. A MammaPrint gene signature performed on the core biopsy indicated a very high risk of recurrence (MammaPrint high risk 2, MPH2). BluePrint 80-gene signature was used for the molecular subtyping and identified the tumor as a basal subtype, resembling triple-negative breast cancer (TNBC) despite the strong estrogen receptor (ER) expression on immunohistochemical (IHC) staining. We treated the patient with a TNBC protocol, incorporating carboplatin and immunotherapy into the anthracycline-based chemotherapy backbone in the neoadjuvant setting. The patient achieved a complete response and remains to be disease-free after 2 years, with ongoing follow-up.</p>

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Successful unconventional precision treatment of inflammatory hormone receptor-positive breast cancer guided by molecular profiling

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年3月7日

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  • Jailan Elayoubi,
  • Yu Zong,
  • Erich J. Schwartz

摘要

We present a unique case of locally advanced, inflammatory hormone receptor (HR) positive, human epidermal growth factor receptor 2 (HER2)-negative breast cancer in a young woman. A MammaPrint gene signature performed on the core biopsy indicated a very high risk of recurrence (MammaPrint high risk 2, MPH2). BluePrint 80-gene signature was used for the molecular subtyping and identified the tumor as a basal subtype, resembling triple-negative breast cancer (TNBC) despite the strong estrogen receptor (ER) expression on immunohistochemical (IHC) staining. We treated the patient with a TNBC protocol, incorporating carboplatin and immunotherapy into the anthracycline-based chemotherapy backbone in the neoadjuvant setting. The patient achieved a complete response and remains to be disease-free after 2 years, with ongoing follow-up.