Preoperative hormonal therapy vs chemotherapy in postmenopausal ER-positive breast cancer patients

2004 ◽  
Vol 2 (3) ◽  
pp. 71 ◽  
Author(s):  
V.F Semiglazov ◽  
V.V Semiglazov ◽  
V.G Ivanov ◽  
E.K Ziltsova ◽  
G.A Dashian ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Patients ◽  
Hormonal Therapy ◽  
Breast Cancer Patients ◽  
Er Positive ◽  
Positive Breast Cancer

The first report of multicenter validation study on curebest 95GC breast, a multi-gene assay to predict prognosis of node negative and ER positive breast cancer patients.

2017 ◽  
Vol 35 (15_suppl) ◽  
pp. e12107-e12107
Author(s):  
Ken-ichi Ito ◽  
Takaaki Oba ◽  
Kenjiro Aogi ◽  
Shozo Ohsumi ◽  
Mina Takahashi ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Patients ◽  
Hormonal Therapy ◽  
Validation Study ◽  
Histological Grade ◽  
Breast Cancer Patients ◽  
Node Negative ◽  
Gene Assay ◽  
Er Positive ◽  
Positive Breast Cancer

e12107 Background: Curebest™ 95GC Breast (95GC) is one of the multi-gene assays to predict prognosis of node negative and estrogen receptor (ER) - positive breast cancer patients, developed using 95 gene-set without overlap with that used in Oncotype DXⓇ(ref 1). It has been shown to have the capability to classify the “intermediate” patients determined using Recurrence Online (microarray-based simulation model for Oncotype DXⓇ) but was validated only using the data from single institute and public database. Here we report the result of the first multi-center validation study for this multi-gene assay. Methods: ER-positive and T1-2/N0/M0 breast cancer patients who received adjuvant hormonal therapy were enrolled retrospectively. Fresh frozen tissues were applied to the assay, resulting classification into “L” and “H”, which was used for the validation on 5 year recurrence free survival (5Y-RFS) data of each patient. Results: 73 cases out of 150 enrolled cases were eligible and analyzed. 46 patients were classified as “L” whose 5Y-RFS was 96.5% (95%CI:89.5-98.9) while 27 patients were classified as “H” whose 5Y-RFS was 79.0% (95%CI:63.6-88.5). There was a statistically significant difference between RFS of “L” and “H” group by Log-Rank test (p = 0.0016). Significant association with 95GC were seen in histological grade (p = 0.0012), Recurrence Online (p < 0.001) and PAM50 (p < 0.001). The assay could classify the patients of histological grade 2, intermediate group by Recurrence Online (RS > 17, RS < 31) and Luminal B patients into “L” and “H”. Conclusions: Curebest™ 95GC Breast was well validated by this first multi-centered retrospective study on 5Y-RFS of the ER positive, node-negative patients who received only hormonal therapy in adjuvant setting. This result indicates the usefulness of 95GC as a novel multi-gene assay, as it can classify target patients into 2 groups, “H” and “L” according to predicted prognosis of 5Y-RFS. Reference: 1. Naoi et al. Breast Cancer Res Treat (2011) 128:632-641

scholarly journals Clinical CYP2D6 Genotyping to Personalize Adjuvant Tamoxifen Treatment in ER-Positive Breast Cancer Patients: Current Status of a Controversy

Cancers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 771
Author(s):  
Tessa A. M. Mulder ◽  
Mirjam de With ◽  
Marzia del Re ◽  
Romano Danesi ◽  
Ron H. J. Mathijssen ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Clinical Outcome ◽  
Cancer Patients ◽  
Plasma Concentrations ◽  
Tamoxifen Treatment ◽  
Current Status ◽  
Endocrine Treatment ◽  
Breast Cancer Patients ◽  
Er Positive ◽  
Positive Breast Cancer

Tamoxifen is a major option for adjuvant endocrine treatment in estrogen receptor (ER) positive breast cancer patients. The conversion of the prodrug tamoxifen into the most active metabolite endoxifen is mainly catalyzed by the enzyme cytochrome P450 2D6 (CYP2D6). Genetic variation in the CYP2D6 gene leads to altered enzyme activity, which influences endoxifen formation and thereby potentially therapy outcome. The association between genetically compromised CYP2D6 activity and low endoxifen plasma concentrations is generally accepted, and it was shown that tamoxifen dose increments in compromised patients resulted in higher endoxifen concentrations. However, the correlation between CYP2D6 genotype and clinical outcome is still under debate. This has led to genotype-based tamoxifen dosing recommendations by the Clinical Pharmacogenetic Implementation Consortium (CPIC) in 2018, whereas in 2019, the European Society of Medical Oncology (ESMO) discouraged the use of CYP2D6 genotyping in clinical practice for tamoxifen therapy. This paper describes the latest developments on CYP2D6 genotyping in relation to endoxifen plasma concentrations and tamoxifen-related clinical outcome. Therefore, we focused on Pharmacogenetic publications from 2018 (CPIC publication) to 2021 in order to shed a light on the current status of this debate.

scholarly journals Analysis of ESR1 and PIK3CA mutations in plasma cell-free DNA from ER-positive breast cancer patients

Oncotarget ◽  
2017 ◽  
Vol 8 (32) ◽  
pp. 52142-52155 ◽  
Author(s):  
Takashi Takeshita ◽  
Yutaka Yamamoto ◽  
Mutsuko Yamamoto-Ibusuki ◽  
Mai Tomiguchi ◽  
Aiko Sueta ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Patients ◽  
Plasma Cell ◽  
Breast Cancer Patients ◽  
Cell Free Dna ◽  
Pik3ca Mutations ◽  
Free Dna ◽  
Er Positive ◽  
Positive Breast Cancer

Suggested modifications in the management of breast cancer patients in the era of COVID-19 pandemic: a web-based survey. (Preprint)

2021 ◽  
Author(s):  
Shereef Elsamany ◽  
Mohamed Elbaiomy ◽  
Ahmed Zeeneldin ◽  
Emad Tashkandi ◽  
Fayza Hassanin ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Patients ◽  
United Arab Emirates ◽  
Hormonal Therapy ◽  
Breast Cancer Patients ◽  
Her2 Positive ◽  
Web Based ◽  
Cancer Management ◽  
Breast Cancer Management ◽  
Positive Breast Cancer

BACKGROUND Management of cancer patients in the current era of COVID-19 pandemic poses a significant challenge on health care systems. OBJECTIVE We explored the views of oncologists for the management of breast cancer patients during COVID-19 pandemic. METHODS A web-based questionnaire using SurveyMonkey was submitted to licensed oncologists involved in breast cancer management in Saudi Arabia, Egypt and United Arab Emirates. The survey focused on characteristics of participants, infection risk among cancer patients and possible treatment modifications related to different types of breast cancer RESULTS The survey was completed by 82 participants. For early HR positive, HER2-negative breast cancer,74.4% supported using neoadjuvant hormonal therapy in selected patients, and 58.0% preferred giving 6 over 8 cycles of adjuvant chemotherapy when indicated. Only 42.7% preferred CDK4/6 inhibitor with hormonal therapy as first line in all patients with metastatic HR-positive disease. 67.1% of participants supported using adjuvant trastuzumab for 6 instead of 12 months in selected patients with HER2-positive breast cancer. For metastatic HER2-positive, HR-positive breast cancer, 80.5% of participants supported the use of hormonal therapy with dual anti-HER2 blockade in selected patients. The preferred choice of 1st line treatment in metastatic triple negative patients with BRCA mutation and PDL1<1%, was PARP inhibitor according to 42.5% of the participants, and atezolizumab with nabpaclitaxel if the PDL1>1% according to 70.4% of the participants. CONCLUSIONS Several modifications in breast cancer management is supported by the survey participants. These modifications need to be discussed on local basis taking into account the local infrastructure and available resources. CLINICALTRIAL none

scholarly journals ESR1-Stabilizing Long Noncoding RNA TMPO-AS1 Promotes Hormone-Refractory Breast Cancer Progression

2019 ◽  
Vol 39 (23) ◽  
Author(s):  
Yuichi Mitobe ◽  
Kazuhiro Ikeda ◽  
Takashi Suzuki ◽  
Kiyoshi Takagi ◽  
Hidetaka Kawabata ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Estrogen Receptor ◽  
Cancer Patients ◽  
Endocrine Therapy ◽  
Cancer Progression ◽  
Long Noncoding Rna ◽  
Noncoding Rna ◽  
Breast Cancer Patients ◽  
Er Positive ◽  
Positive Breast Cancer

ABSTRACT Acquired endocrine therapy resistance is a significant clinical problem for breast cancer patients. In recent years, increasing attention has been paid to long noncoding RNA (lncRNA) as a critical modulator for cancer progression. Based on RNA-sequencing data of breast invasive carcinomas in The Cancer Genome Atlas database, we identified thymopoietin antisense transcript 1 (TMPO-AS1) as a functional lncRNA that significantly correlates with proliferative biomarkers. TMPO-AS1 positivity analyzed by in situ hybridization significantly correlates with poor prognosis of breast cancer patients. TMPO-AS1 expression was upregulated in endocrine therapy-resistant MCF-7 cells compared with levels in parental cells and was estrogen inducible. Gain and loss of TMPO-AS1 experiments showed that TMPO-AS1 promotes the proliferation and viability of estrogen receptor (ER)-positive breast cancer cells in vitro and in vivo. Global expression analysis using a microarray demonstrated that TMPO-AS1 is closely associated with the estrogen signaling pathway. TMPO-AS1 could positively regulate estrogen receptor 1 (ESR1) mRNA expression by stabilizing ESR1 mRNA through interaction with ESR1 mRNA. Enhanced expression of ESR1 mRNA by TMPO-AS1 could play a critical role in the proliferation of ER-positive breast cancer. Our findings provide a new insight into the understanding of molecular mechanisms underlying hormone-dependent breast cancer progression and endocrine resistance.

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