Abstract
Trastuzumab-based treatment has dramatically improved the outcomes of HER2-positive (HER2+) metastatic breast cancer (MBC) patients, with some patients achieving prolonged survival times. In this study, we aim to identify factors that are associated with long-term survival. Patients with HER2+ MBC treated with anti-HER2 target therapy were identified. Patients were grouped according to overall survival (OS) and categorized as long-term survivors (LTS, OS ≥ 5 years), or non-long-term survivors (non-LTS, OS < 5 years). Descriptive statistics and multivariable logistic regression modeling were used. A sensitivity analysis was carried out, including only patients diagnosed before 2007; therefore, 5 years of potential follow-up was possible. 1063 patients with HER2+ MBC diagnosed between 1994 and 2012 and treated with anti-HER2 therapy were identified. Among them, 154 (14.5 %) patients were categorized as LTS (median OS 92.2 months). Among LTS, 63.4 % were HR-positive and 32 % had de novo stage IV disease. Hormone receptor positivity (OR) 1.69; 95 % CI 1.17–2.44), resection of metastases (OR 2.38; 95 % CI 1.53–3.69), and primary breast surgery in patients with de novo stage IV (OR 2.88; 95 % CI 1.47–5.66) were associated with improved long-term survival. Greater number of metastatic sites (≥3 vs. 1, OR 0.41; 95 % CI 0.23–0.72) and visceral metastases (OR 0.61; 95 % CI 0.4–0.91) were associated with poor survival. Hormone receptor positivity, low burden of disease, metastasis to soft and bone tissues, and surgical management with resection of the metastatic site and the primary tumor were associated with long-term survival in patients with MBC who received anti-HER2 treatment.
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References
Gutierrez C, Schiff R (2011) HER2: biology, detection, and clinical implications. Arch Pathol Lab Med 135:55–62
Slamon DJ, Leyland-Jones B, Shak S et al (2001) Use of chemotherapy plus a monoclonal antibody against HER2 for metastatic breast cancer that overexpresses HER2. N Engl J Med 344:783–792
Arteaga CL, Sliwkowski MX, Osborne CK et al (2012) Treatment of HER2-positive breast cancer: current status and future perspectives. Nat Rev Clin Oncol 9:16–32
Liu AN, Sun P, Liu JN et al (2012) Clinicopathologic characteristics and prognostic factors in patients with operable HER-2 overexpressing breast cancer. Asian Pac J Cancer Prev 13:1197–1201
Kim JW, Kim JH, Im SA et al (2013) HER2/CEP17 ratio and HER2 immunohistochemistry predict clinical outcome after first-line trastuzumab plus taxane chemotherapy in patients with HER2 fluorescence in situ hybridization-positive metastatic breast cancer. Cancer Chemother Pharmacol 72:109–115
Giuliani R, Durbecq V, Di Leo A et al (2007) Phosphorylated HER-2 tyrosine kinase and Her-2/neu gene amplification as predictive factors of response to trastuzumab in patients with HER-2 overexpressing metastatic breast cancer (MBC). Eur J Cancer 43:725–735
Esteva FJ, Yu D, Hung MC, Hortobagyi GN (2010) Molecular predictors of response to trastuzumab and lapatinib in breast cancer. Nat Rev Clin Oncol 7:98–107
Vaz-Luis I, Seah D, Olson EM et al (2013) Clinicopathological features among patients with advanced human epidermal growth factor-2-positive breast cancer with prolonged clinical benefit to first-line trastuzumab-based therapy: a retrospective cohort study. Clin Breast Cancer 13:254–263
Yardley DA, Tripathy D, Brufsky AM et al (2014) Long-term survivor characteristics in HER2-positive metastatic breast cancer from registHER. Br J Cancer 110:2756–2764
Dawood S, Broglio K, Buzdar AU et al (2010) Prognosis of women with metastatic breast cancer by HER2 status and trastuzumab treatment: an institutional-based review. J Clin Oncol 28:92–98
Montemurro F, Di Cosimo S, Arpino G (2013) Human epidermal growth factor receptor 2 (HER2)-positive and hormone receptor-positive breast cancer: new insights into molecular interactions and clinical implications. Ann Oncol 24:2715–2724
Baselga J, Bradbury I, Eidtmann H et al (2012) Lapatinib with trastuzumab for HER2-positive early breast cancer (NeoALTTO): a randomised, open-label, multicentre, phase 3 trial. Lancet 379:633–640
Untch M, Loibl S, Bischoff J et al (2012) Lapatinib versus trastuzumab in combination with neoadjuvant anthracycline-taxane-based chemotherapy (GeparQuinto, GBG 44): a randomised phase 3 trial. Lancet Oncol 13:135–144
De Laurentiis M, Arpino G, Massarelli E et al (2005) A meta-analysis on the interaction between HER-2 expression and response to endocrine treatment in advanced breast cancer. Clin Cancer Res 11:4741–4748
Tripathy D, Kaufman PA, Brufsky AM et al (2013) First-line treatment patterns and clinical outcomes in patients with HER2-positive and hormone receptor-positive metastatic breast cancer from registHER. Oncologist 18:501–510
Badwe R, Hawaldar R, Nair N et al (2015) Locoregional treatment versus no treatment of the primary tumour in metastatic breast cancer: an open-label randomised controlled trial. Lancet Oncol 16:1380–1388
Harris E, Barry M, Kell MR (2013) Meta-analysis to determine if surgical resection of the primary tumour in the setting of stage IV breast cancer impacts on survival. Ann Surg Oncol 20:2828–2834
Pagani O, Senkus E, Wood W et al (2010) International guidelines for management of metastatic breast cancer: can metastatic breast cancer be cured? J Natl Cancer Inst 102:456–463
Swain SM, Baselga J, Kim SB et al (2015) Pertuzumab, trastuzumab, and docetaxel in HER2-positive metastatic breast cancer. N Engl J Med 372:724–734
Verma S, Miles D, Gianni L et al (2012) Trastuzumab emtansine for HER2-positive advanced breast cancer. N Engl J Med 367:1783–1791
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The National Cancer Institute through The University of Texas MD Anderson’s Cancer Center Support Grant (P30 CA016672).
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Mariana Chavez-MacGregor has served as a consultant for Roche and Pfizer and has received funding (given to the institution) from Novartis. Rashmy Murthy has served as a consultant for Dailchi Sankyo and Genentech and has received funding (given to the institution) from Merrimack pharmaceuticals and Oncotyeron.
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Harano, K., Lei, X., Gonzalez-Angulo, A.M. et al. Clinicopathological and surgical factors associated with long-term survival in patients with HER2-positive metastatic breast cancer. Breast Cancer Res Treat 159, 367–374 (2016). https://doi.org/10.1007/s10549-016-3933-6
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DOI: https://doi.org/10.1007/s10549-016-3933-6