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Case Report

Long‑responders to anti‑HER2 therapies: A case report and review of the literature

  • Authors:
    • Luca Cantini
    • Mirco Pistelli
    • Agnese Savini
    • Lucia Bastianelli
    • Arianna Della Mora
    • Filippo Merloni
    • Michela Burattini
    • Rossana Berardi
  • View Affiliations / Copyright

    Affiliations: Medical Oncology, Marche Polytechnic University, University Hospital Ospedali Riuniti Ancona, I-60126 Ancona, Italy
  • Pages: 147-152
    |
    Published online on: November 8, 2017
       https://doi.org/10.3892/mco.2017.1495
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Abstract

Since the introduction of targeted therapies, prognosis in human epidermal growth factor receptor (HER) 2‑positive metastatic breast cancer (MBC) has radically changed. The addition of Pertuzumab to Trastuzumab and standard chemotherapy has further increased patients' overall survival (OS). However, there is no agreement regarding the optimal duration of trastuzumab therapy in selected patients achieving long‑term complete remission. In addition, no potential factors of long‑term benefit have been identified yet. In the present study, we report the case of a MBC woman who was successfully treated with trastuzumab for over 10 years. At the time of diagnosis (February 2005), she revealed lung, nodal and bone metastases. Therefore, a first‑line chemotherapy with Epirubicine and Docetaxel was administered for 6 cycles and then the patient started Trastuzumab plus hormonal therapy until reaching a sensible reduction of mammary lump and disappearance of distant metastases. Following a multidisciplinary evaluation, in November 2006, the patient underwent radical mastectomy and axillary dissection, achieving a complete remission. She continued Trastuzumab until September 2015 (for a total of 156 cycles) when a pleural diffusion was demonstrated. Long‑term survival during anti‑HER2 treatment remains a rare and optimal situation. Currently, no data exist to support trastuzumab interruption in this setting and collaborative efforts to better analyze the characteristics of long‑responder patients are needed. Data regarding prognostic factors in this setting are relatively confusing. Our review reveals that hormonal receptor (HR)-positive disease is associated with a better prognosis, whereas the role of visceral spread differs by single or dual target anti HER2-inhibition. The introduction of Pertuzumab is raising concerns in terms of toxicity and its cost effectiveness. While waiting for novel molecular data and randomized trials, available evidence advocates continuous use of anti‑HER2 therapies until disease progression or development of side effects.
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Copy and paste a formatted citation
Spandidos Publications style
Cantini L, Pistelli M, Savini A, Bastianelli L, Della Mora A , Merloni F, Burattini M and Berardi R: Long‑responders to anti‑HER2 therapies: A case report and review of the literature . Mol Clin Oncol 8: 147-152, 2018.
APA
Cantini, L., Pistelli, M., Savini, A., Bastianelli, L., Della Mora, A. ., Merloni, F. ... Berardi, R. (2018). Long‑responders to anti‑HER2 therapies: A case report and review of the literature . Molecular and Clinical Oncology, 8, 147-152. https://doi.org/10.3892/mco.2017.1495
MLA
Cantini, L., Pistelli, M., Savini, A., Bastianelli, L., Della Mora, A. ., Merloni, F., Burattini, M., Berardi, R."Long‑responders to anti‑HER2 therapies: A case report and review of the literature ". Molecular and Clinical Oncology 8.1 (2018): 147-152.
Chicago
Cantini, L., Pistelli, M., Savini, A., Bastianelli, L., Della Mora, A. ., Merloni, F., Burattini, M., Berardi, R."Long‑responders to anti‑HER2 therapies: A case report and review of the literature ". Molecular and Clinical Oncology 8, no. 1 (2018): 147-152. https://doi.org/10.3892/mco.2017.1495
Copy and paste a formatted citation
x
Spandidos Publications style
Cantini L, Pistelli M, Savini A, Bastianelli L, Della Mora A , Merloni F, Burattini M and Berardi R: Long‑responders to anti‑HER2 therapies: A case report and review of the literature . Mol Clin Oncol 8: 147-152, 2018.
APA
Cantini, L., Pistelli, M., Savini, A., Bastianelli, L., Della Mora, A. ., Merloni, F. ... Berardi, R. (2018). Long‑responders to anti‑HER2 therapies: A case report and review of the literature . Molecular and Clinical Oncology, 8, 147-152. https://doi.org/10.3892/mco.2017.1495
MLA
Cantini, L., Pistelli, M., Savini, A., Bastianelli, L., Della Mora, A. ., Merloni, F., Burattini, M., Berardi, R."Long‑responders to anti‑HER2 therapies: A case report and review of the literature ". Molecular and Clinical Oncology 8.1 (2018): 147-152.
Chicago
Cantini, L., Pistelli, M., Savini, A., Bastianelli, L., Della Mora, A. ., Merloni, F., Burattini, M., Berardi, R."Long‑responders to anti‑HER2 therapies: A case report and review of the literature ". Molecular and Clinical Oncology 8, no. 1 (2018): 147-152. https://doi.org/10.3892/mco.2017.1495
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