Scattered Fat Invasion: An Indicator for Poor Prognosis in Premenopausal, and for Positive Estrogen Receptor in Postmenopausal Breast Cancer Patients

Oncology ◽  
2000 ◽  
Vol 59 (Suppl. 1) ◽  
pp. 25-30 ◽  
Author(s):  
I. Kimijima ◽  
T. Ohtake ◽  
H. Sagara ◽  
T. Watanabe ◽  
S. Takenoshita
Keyword(s):  
Breast Cancer ◽  
Estrogen Receptor ◽  
Cancer Patients ◽  
Poor Prognosis ◽  
Postmenopausal Breast Cancer ◽  
Breast Cancer Patients

Association of the phosphorylation of the estrogen receptor at serine 118 and 167 with prognosis in postmenopausal breast cancer patients.

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. 562-562
Author(s):  
Karin J. Beelen ◽  
Mark Opdam ◽  
Rutger H.T. Koornstra ◽  
Andrew D. Vincent ◽  
Jan Baptist Vermorken ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Estrogen Receptor ◽  
Cancer Patients ◽  
Estrogen Therapy ◽  
Postmenopausal Breast Cancer ◽  
Tamoxifen Treatment ◽  
Adjuvant Tamoxifen ◽  
Breast Cancer Patients ◽  
Premenopausal Breast Cancer ◽  
Cox Models

562 Background: The sensitivity of the estrogen receptor (ERα) to anti-estrogen therapy can be affected by phosphorylation events. In premenopausal breast cancer patients, phosphorylation of the ERα at serine 118 (ERαS118-p) is predictive for benefit from adjuvant tamoxifen. Since ERαS118-p represents the common hallmark of different signaling cascades that differ in E2 dependency, the resulting effect on estrogen sensitivity may differ between pre- and postmenopausal patients. Phosphorylation of serine 167 (ERαS167-p) has been associated with favorable disease outcome, but whether ERαS167-p can predict tamoxifen sensitivity is currently unknown. We tested the predictive value of both ERαS118-p and ERαS167-p for benefit from adjuvant tamoxifen in postmenopausal breast cancer patients. Methods: We collected primary tumor blocks from 563 ERα positive (stage I-III) postmenopausal patients who had been randomized between tamoxifen (1 to 3 years) vs. no adjuvant therapy (IKA trial). The median follow-up of patients without a recurrence event was 9.4 years. Immunohistochemistry was performed on a TMA using monoclonal antibodies for ERαS118-p and ERαS167-p. The percentage of positive nuclei was scored and a score of ≥ 10 % was considered as positive. Multivariate Cox models were used to assess hazard ratios (HRs) for recurrence free interval and the interaction between these phosphorylations and tamoxifen treatment. Results: We did not find a significant interaction between either ERαS118-p (p=0.99) or ERαS167-p (p=0.44) and tamoxifen, suggesting that the relative benefit from adjuvant tamoxifen in postmenopausal patients is not dependent on the presence of one of these phosphorylations. Both tamoxifen treated patients as well as control patients had a better prognosis when their tumor was positive for ERαS118-p (adjusted HR 0.60 p=0.02) or ERαS167-p (adjusted HR 0.62, p=0.02) compared to patients whose tumor did not express these ERα phosphorylations. Conclusions: In postmenopausal patients ERαS118-p and ERαS167-p are both associated with better prognosis, but do not predict differential benefit from tamoxifen.

Association between breast cancer and estrogen receptor gene polymorphism PVU II

2006 ◽  
Vol 24 (18_suppl) ◽  
pp. 643-643
Author(s):  
K. Neuss ◽  
D. Elling ◽  
I. Cascorbi ◽  
D. Lueftner
Keyword(s):  
Breast Cancer ◽  
Estrogen Receptor ◽  
Cancer Patients ◽  
Receptor Gene ◽  
White Blood Cells ◽  
Postmenopausal Breast Cancer ◽  
Receptor Expression ◽  
Restriction Enzyme Digestion ◽  
Breast Cancer Patients ◽  
Receptor Polymorphism

643 Background: The estrogen receptor (ER) is well acknowledged as a prognostic factor in breast cancer, and it is a prerequisite to use the predictive information for hormonal therapy. We investigated whether that the different polymorphisms of the estrogen receptor could influence its expression or functionality. Methods: DNA was extracted from white blood cells of 236 breast cancer patients and 236 healthy, matched controls. The ER genotypes were determined by polymerase chain reaction (PCR) amplification followed by restriction enzyme digestion of the PCR product. Results were shown by electrophoreses. Clinical data such as histologic types, pTNM stage and patients age were available for statistical analyses. Results: We found a statistically significant correlation between the estrogen receptor polymorphism pattern and breast cancer. The receptor type PP was detected statistically significantly more often in postmenopausal breast cancer patients (PP vs pp+Pp, p =0.03). However, there was no correlation to the histobiochemical receptor status or UICC-Stadium. Conclusions: These results show an association between the estrogen receptor polymorphism and breast cancer. It seems to be that a complete lack of the p-allel is a risk factor to develop breast cancer at postmenopausal age. There was no influence on estrogen receptor expression or clinical tumor stage. Thus, we propose that there is no clinical use for estrogen receptor polymorphism analyses at this stage. No significant financial relationships to disclose.

scholarly journals Effect of Wnt5a on drug resistance in estrogen receptor-positive breast cancer

Breast Cancer ◽  
2021 ◽  
Author(s):  
Ai Amioka ◽  
Takayuki Kadoya ◽  
Satoshi Sueoka ◽  
Yoshie Kobayashi ◽  
Shinsuke Sasada ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Estrogen Receptor ◽  
Cancer Patients ◽  
Poor Prognosis ◽  
Breast Cancer Patients ◽  
Mtor Signaling Pathway ◽  
The Poor ◽  
Er Positive ◽  
Mcf 7 ◽  
Positive Breast Cancer

Abstract Background Previously, we reported that Wnt5a-positive breast cancer can be classified as estrogen receptor (ER)-positive breast cancer; its prognosis is worse than that of Wnt5a-negative breast cancer. This study aimed to investigate the mechanisms underlying the poor prognosis in Wnt5a-positive breast cancer patients. Methods In total, 151 consecutive ER-positive breast cancer patients who underwent resection between January 2011 and February 2014 were enrolled. DNA microarray and pathway analyses were conducted using MCF-7 cells stably expressing Wnt5a [MCF-7/Wnt5a (+)]. Based on the outcomes, cell viability/drug sensitivity assays, and mutation analysis were performed using cell cultures and breast cancer tissues. The relationship between Wnt5a and the PI3K–AKT–mTOR signaling pathway was also examined. Results The relapse-free survival rate in patients with Wnt5a-positive breast cancer was significantly lower than that in patients with Wnt5a-negative breast cancer (P = 0.047). DNA microarray data suggest that only the cytochrome P450 (CYP) pathway was significantly upregulated in MCF-7/Wnt5a (+) cells (P = 0.0440). Additionally, MCF-7/Wnt5a (+) cells displayed reduced sensitivity to the metabolic substrates of CYP, tamoxifen (P < 0.001), paclitaxel (P < 0.001), and cyclophosphamide (P < 0.001). Of note, PIK3CA mutations were not associated with the expression of Wnt5a in breast cancer tissue and culture cells. Conclusions In ER-positive breast cancer, Wnt5a upregulates the CYP metabolic pathway and suppresses tamoxifen, paclitaxel, and cyclophosphamide resistance, all of the three, standard treatment methods for ER-positive breast cancer. Wnt5a is thus potentially involved in the poor prognosis of ER-positive breast cancer independently of the PI3K–AKT–mTOR signaling pathway.

Sign in / Sign up

Export Citation Format

Share Document