Triple-Negative Breast Cancer Survival in Iranian Patients
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Abstract
This study focused on triple-negative breast cancer (TNBC) that is characterized by the lack of expression of estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER-2). The primary goal of this study was to describe the relation between triple-negative receptor status and survival. This is the first study about triple-negative breast cancer in our community of the 1541 patients diagnosed with breast cancer between 2002 and 2007 at the Cancer Institute (Tehran, Iran). 107 patients were identified as TNBC and 107 patients were randomly selected as non-TNB. HER-2, ER and PR status were assessed by immunohistochemistry (IHC). Analyses of their collected data were performed retrospectively and then clinical and pathologic parameters were compared between two groups. In multivariate analysis, a significantly decreased overall survival was observed for patients with TNBC compared with non-TNBC (55.7 months versus 60.7 mounts; 95%CI: 51.1-60.3 and 57.9-63.5 for TNBC and non-TNBC respectively, P=0.0008). The 2- and 5-year estimates for overall survival were 69.8% and 62.3% for TNBC, and 90% and 83% for non-TNBC, respectively. During the study period, 36 (33.6%) patient of TNBC and 14 (13.1%) of non-TNBC presented local recurrence. Significantly decreased disease-free survival was also observed for patients with TNBC compared with non-TNBC (P=0.0004). The 2- and 5-year estimates for disease-free survival were 68% and 63% for TNBC; and 89% and 82% for non-TNBC, respectively. Significantly decreased distant metastasis free survival was also observed for patients with TNBC compared with non-TNBC (54.4 mounts versus 61.7 mounts; 95%CI: 49.8-59.0 and 59.1-64.4 for TNBC and non-TNBC respectively, P=0.0004). Triple negative breast cancer has a biologic aggressive behavior and poor prognosis. Therefore aggressive treatment and regular follow-up in early stage of diagnosis can be a significant impact on their prognosis.
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| Issue | Vol 51, No 8 (2013) | |
| Section | Articles | |
| Keywords | ||
| Breast cancer Iran Survival Triple negative | ||
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