Trastuzumab in Primary Inflammatory Breast Cancer (IBC): High Pathological Response Rates and Improved Outcome.

The Breast Journal
Shaheenah DawoodMassimo Cristofanilli

Abstract

Inflammatory breast cancer (IBC) represents a rare but aggressive and lethal form of locally advanced breast cancer (LABC) and frequently with HER-2 neu overexpressed or amplified. We retrospectively identified 16 newly diagnosed HER-2 ⁄ neu-positive IBC patients who were treated with preoperative trastuzumab. We determined the pathological complete response rate (pCR) when trastuzumab was added to preoperative chemotherapy in patients with HER2⁄ neupositive IBC. Furthermore, we assessed the expression of CXCR4 in metastatic recurrence sites. Ten patients (62.5%)achieved a pCR. Six patients (37.5%) achieved a partial response. Median follow-up of all patients was 24.2 months. Four(25%) patients have experienced a progression, of which three were in the brain. Two-year progression-free survival was 59.4% (95% CI 35–100). High expression of CXCR4 was detected in the brain metastases. We conclude that in spite of high pCR rates among women with HER-2 ⁄ neu-positive IBC treated with neoadjuvant trastuzumab-based regimens the outcome remains dismal and brain recurrences are frequent. CXCR4 may represent a novel therapeutic target.

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Citations

Aug 17, 2011·European Journal of Surgical Oncology : the Journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology·V SemiglazovL Gianni
Aug 16, 2019·Current Oncology Reports·Jennifer M Rosenbluth, Beth A Overmoyer
May 8, 2013·American Journal of Clinical Oncology·Chiaojung Jillian TsaiThomas A Buchholz
Jan 12, 2017·International Journal of Molecular Medicine·Yuze CaoLihua Wang
Sep 5, 2020·Cancers·Xiaoping WangNaoto T Ueno
Dec 30, 2014·Clinical Cancer Research : an Official Journal of the American Association for Cancer Research·Jean-Yves PiergaPatrice Viens
Jan 7, 2021·Annals of Surgical Oncology·Natalia PartainAnthony Lucci

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