Prognostic factors of HER2-positive breast cancer patients who develop brain metastasis: a multicenter retrospective analysis

The clinical course and prognostic factors of HER2-positive breast cancer patients with brain metastases are not well known because of the relatively small population. The aim of this study was to determine prognostic factors associated with HER2-positive patients who develop brain metastases. This...

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Veröffentlicht in:Breast cancer research and treatment 2015-01, Vol.149 (1), p.277-284
Hauptverfasser: Hayashi, Naoki, Niikura, Naoki, Masuda, Norikazu, Takashima, Seiki, Nakamura, Rikiya, Watanabe, Ken-ichi, Kanbayashi, Chizuko, Ishida, Mayumi, Hozumi, Yasuo, Tsuneizumi, Michiko, Kondo, Naoto, Naito, Yoichi, Honda, Yayoi, Matsui, Akira, Fujisawa, Tomomi, Oshitanai, Risa, Yasojima, Hiroyuki, Yamauchi, Hideko, Saji, Shigehira, Iwata, Hiroji
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container_issue 1
container_start_page 277
container_title Breast cancer research and treatment
container_volume 149
creator Hayashi, Naoki
Niikura, Naoki
Masuda, Norikazu
Takashima, Seiki
Nakamura, Rikiya
Watanabe, Ken-ichi
Kanbayashi, Chizuko
Ishida, Mayumi
Hozumi, Yasuo
Tsuneizumi, Michiko
Kondo, Naoto
Naito, Yoichi
Honda, Yayoi
Matsui, Akira
Fujisawa, Tomomi
Oshitanai, Risa
Yasojima, Hiroyuki
Yamauchi, Hideko
Saji, Shigehira
Iwata, Hiroji
description The clinical course and prognostic factors of HER2-positive breast cancer patients with brain metastases are not well known because of the relatively small population. The aim of this study was to determine prognostic factors associated with HER2-positive patients who develop brain metastases. This retrospective study assessed the largest dataset to date of 432 HER2-positive patients who were diagnosed with brain metastases from 24 institutions of the Japan Clinical Oncology Group, Breast Cancer Study Group. The median age of the 432 patients was 54 years (range, 20–86 years). Of the patients, 162 patients (37.5 %) had ER-positive/HER2-positive (ER+HER2+) breast cancer, and 270 (62.5 %) had ER-negative/HER2-positive (ER−HER2+) breast cancer. The median brain metastasis-free survival period from primary breast cancer was 33.5 months in both groups. The median survival after developing brain metastasis was 16.5 and 11.5 months in the ER+HER2+ and ER−HER2+ groups, respectively, ( p  = 0.117). Patients with >3 brain metastases had significantly shorter overall survival in both ER+HER2+ ( p  
doi_str_mv 10.1007/s10549-014-3237-7
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The aim of this study was to determine prognostic factors associated with HER2-positive patients who develop brain metastases. This retrospective study assessed the largest dataset to date of 432 HER2-positive patients who were diagnosed with brain metastases from 24 institutions of the Japan Clinical Oncology Group, Breast Cancer Study Group. The median age of the 432 patients was 54 years (range, 20–86 years). Of the patients, 162 patients (37.5 %) had ER-positive/HER2-positive (ER+HER2+) breast cancer, and 270 (62.5 %) had ER-negative/HER2-positive (ER−HER2+) breast cancer. The median brain metastasis-free survival period from primary breast cancer was 33.5 months in both groups. The median survival after developing brain metastasis was 16.5 and 11.5 months in the ER+HER2+ and ER−HER2+ groups, respectively, ( p  = 0.117). Patients with &gt;3 brain metastases had significantly shorter overall survival in both ER+HER2+ ( p  &lt; 0.001) and ER−HER2+ ( p  = 0.018) groups. Treatment with trastuzumab before developing brain metastases was not associated with survival duration after developing brain metastases ( p  = 0.571). However, patients treated with both trastuzumab and lapatinib after developing metastasis had significantly longer survival than patients treated with trastuzumab alone, lapatinib alone, or no HER2-targeting agent ( p  &lt; 0.001). 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Treatment with trastuzumab before developing brain metastases was not associated with survival duration after developing brain metastases ( p  = 0.571). However, patients treated with both trastuzumab and lapatinib after developing metastasis had significantly longer survival than patients treated with trastuzumab alone, lapatinib alone, or no HER2-targeting agent ( p  &lt; 0.001). 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The aim of this study was to determine prognostic factors associated with HER2-positive patients who develop brain metastases. This retrospective study assessed the largest dataset to date of 432 HER2-positive patients who were diagnosed with brain metastases from 24 institutions of the Japan Clinical Oncology Group, Breast Cancer Study Group. The median age of the 432 patients was 54 years (range, 20–86 years). Of the patients, 162 patients (37.5 %) had ER-positive/HER2-positive (ER+HER2+) breast cancer, and 270 (62.5 %) had ER-negative/HER2-positive (ER−HER2+) breast cancer. The median brain metastasis-free survival period from primary breast cancer was 33.5 months in both groups. The median survival after developing brain metastasis was 16.5 and 11.5 months in the ER+HER2+ and ER−HER2+ groups, respectively, ( p  = 0.117). Patients with &gt;3 brain metastases had significantly shorter overall survival in both ER+HER2+ ( p  &lt; 0.001) and ER−HER2+ ( p  = 0.018) groups. Treatment with trastuzumab before developing brain metastases was not associated with survival duration after developing brain metastases ( p  = 0.571). However, patients treated with both trastuzumab and lapatinib after developing metastasis had significantly longer survival than patients treated with trastuzumab alone, lapatinib alone, or no HER2-targeting agent ( p  &lt; 0.001). For HER2-positive patients with brain metastases, regardless of the use of trastuzumab before developing brain metastasis, treatment with both trastuzumab and lapatinib might improve survival.</abstract><cop>Boston</cop><pub>Springer US</pub><pmid>25528021</pmid><doi>10.1007/s10549-014-3237-7</doi><tpages>8</tpages></addata></record>
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1573-7217
language eng
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source MEDLINE; SpringerLink Journals
subjects Adult
Aged
Aged, 80 and over
Antibodies, Monoclonal, Humanized - administration & dosage
Brain
Brain Neoplasms - drug therapy
Brain Neoplasms - epidemiology
Brain Neoplasms - pathology
Brain Neoplasms - secondary
Breast cancer
Breast Neoplasms - drug therapy
Breast Neoplasms - epidemiology
Breast Neoplasms - pathology
Cancer patients
Cancer research
Cancer therapies
Disease-Free Survival
Epidemiology
Epidermal growth factor
Female
Health aspects
Humans
Japan
Kaplan-Meier Estimate
Medical prognosis
Medicine
Medicine & Public Health
Metastasis
Middle Aged
Oncology
Prognosis
Quinazolines - administration & dosage
Receptor, ErbB-2 - antagonists & inhibitors
Receptor, ErbB-2 - genetics
Retrospective Studies
Trastuzumab
title Prognostic factors of HER2-positive breast cancer patients who develop brain metastasis: a multicenter retrospective analysis
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