BACKGROUND Hereditary triple-negative breast cancer patients have better recurrence-free survival than triple-negative sporadic ones. High expression of some of the miRNAs is related to worse overall and disease-free survival of triple-negative breast cancer patients. The attempt to associate expression level of some miRNA in triple-negative hereditary and sporadic breast cancers to disease spe...

OBJECTIVE Apocrine carcinoma, a subtype of invasive ductal carcinoma of the breast, expresses androgen receptor (AR), but often lacks estrogen receptor (ER) and progesterone receptor (PgR). In the present study, the author immunohistochemically defined apocrine-type carcinoma as ER-/PgR-/AR+ invasive ductal carcinoma and analyzed the significance of apocrine-type carcinoma as triple-negative br...

Breast cancers lacking estrogen and progesterone receptor expression and Her2 amplification exhibit distinct gene expression profiles and clinical features, and they comprise the majority of BRCA1-associated tumors. Here we demonstrated that the p53 family member p63 controls a pathway for p73-dependent cisplatin sensitivity specific to these "triple-negative" tumors. In vivo, DeltaNp63 and TAp...

BACKGROUND Breast cancer incidence is higher among black women than white women before age 40 years, but higher among white women than black women after age 40 years (black-white crossover). We used newly available population-based data to examine whether the age-specific incidences of breast cancer subtypes vary by race and ethnicity. METHODS We classified 91908 invasive breast cancers diagn...

INTRODUCTION Breast cancer is the second most common cancer worldwide (1.3 million cases, 10.9%) and ranks 5 th as cause of death from cancer overall (458,000 cases, 6.1%). Triple-negative breast cancer (TNBC) is a subtype of breast cancer with characteristic biological and pathological features. Among the subgroups of breast cancer, triple negative cancer is particularly feared because it is a...

BACKGROUND To investigate the clinicopathological significance of androgen receptor (AR) expression in primary breast cancers. PATIENTS AND METHODS We evaluated AR using immunohistochemistry from 413 whole sections from January 2008 to March 2009 and analyzed the relationship between AR and clinicopathological parameters. Tumors with >/=10% nuclear-stained cells were considered to be positive...

Triple negative breast tumors are described by the lack of immunohistochemical expression for hormone receptors (ER and PgR) and Her2 neu. The immunophenotype is, in general,associated with young age and high biological aggressiveness,its frequency in the literature ranging from 10 to 20%. In our study we performed a retrospective classification of triple negative breast cancers in order to sho...

BACKGROUND Breast cancer in Iranian women occurs about a decade earlier than in Western countries. This study sought to evaluate the impact of triple negative phenotype on early onset of ductal cell breast cancer and its prognosis in Iranian females. METHODS Estrogen and progesterone receptors, Her-2 overexpression and nuclear accumulation of P53 were assessed in sixty surgically resected for...

Background: Previous studies have suggested that BRCA1 dysregulation has been shown to have a role in triple-negative phenotypic manifestation. However, differences of BRCA1 expression, as a tumor suppressor gene, have rarely been investigated between luminal and triple-negative breast tumors. Therefore, the present study attempted to compare the BRCA1 expression in triple-negative with lu...

Triple-negative breast cancers have a poor prognosis and are not amenable to endocrine- or HER2-targeted therapies. The prevailing view is that targeting the insulin-like growth factor (IGF) signal transduction pathway will not be beneficial for triple-negative breast cancers because their growth is not IGF-responsive. The present study investigates the importance of IGFs in the proliferation a...