Surgical Considerations and Expectations in Patients Receiving Neoadjuvant Chemotherapy and Neoadjuvant Endocrine Therapy

2021 ◽  
pp. 219-238
Author(s):  
Olga Kantor ◽  
Anna Weiss
Keyword(s):  
Neoadjuvant Chemotherapy ◽  
Endocrine Therapy ◽  
Neoadjuvant Endocrine Therapy

Efficacy of Neoadjuvant Endocrine Therapy Versus Neoadjuvant Chemotherapy in ER-positive Breast Cancer: Results From a Prospective Institutional Database

2019 ◽  
Vol 19 (6) ◽  
pp. e683-e689 ◽  
Author(s):  
Nathalie LeVasseur ◽  
Kaylie-Anne Willemsma ◽  
Huaqi Li ◽  
Lovedeep Gondara ◽  
Walter C. Yip ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Neoadjuvant Chemotherapy ◽  
Endocrine Therapy ◽  
Neoadjuvant Endocrine Therapy ◽  
Er Positive ◽  
Positive Breast Cancer

scholarly journals NEOADJUVANT ENDOCRINE THERAPY FOR PATIENTS WITH ESTROGEN-RECEPTOR-POSITIVE BREAST CANCER

2018 ◽  
Vol 17 (3) ◽  
pp. 11-19
Author(s):  
V. F. Semiglazov ◽  
V. V. Semiglazov ◽  
G. A. Dashyan ◽  
P. V. Krivorotko ◽  
V. G. Ivanov ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Estrogen Receptor ◽  
Neoadjuvant Chemotherapy ◽  
Endocrine Therapy ◽  
Locally Advanced ◽  
Response To Therapy ◽  
Neoadjuvant Endocrine Therapy ◽  
Receive Hormone Therapy ◽  
Study Results ◽  
Estrogen Receptor Positive

More than 70 % of patients with breast cancer have estrogen-receptor-positive tumors (ER+) and are considered hormone- sensitive. That is why a vast majority of patients with early operable  tumors receive adjuvant endocrine therapy. Patients with metastatic  ER+ breast cancer also receive hormone therapy as first-line  treatment. Patients with ER+/PR+ locally advanced breast cancer  including potentially operable cases (cT2N1, cT3N0M0) are still a  subject to neoadjuvant chemotherapy in most of the oncology  centers in Russia and worldwide. More than 10 years ago, several  trials evaluating the efficacy of neoadjuvant endocrine therapy were  conducted in the Petrov Research Institute of Oncology (aromatase  inhibitors vs tamoxifen, neoadjuvant endocrine therapy vs  neoadjuvant chemotherapy, etc.) The primary endpoint was the  evaluation of pathologic complete/partial response to therapy and  the frequency of breast-conserving surgeries following neoadjuvant  treatment. We now represent 10-year long-term follow-up data on  comparison of neoadjuvant chemotherapy with neoadjuvant  endocrine therapy after retrospective determination of IHC- phenotypes of 239 patients with ER+ breast cancer. The study  results show tendency to better 10-year disease-free survival in  patients with luminal-A breast cancer who received endocrine  therapy compared to neoadjuvant chemotherapy (72.8 % vs 53.9  %, respectively, p=0.062) There were no statistically significant  differences in DFS rates among patients with the luminal B breast  cancer subtype (41 % vs 40 %) The discovery of biomarkers of  potential resistance to endocrine therapy (cycline-dependant kinase  activity [cdk 4/6], estrogenreceptor mutation [ESR1], mTOR  signaling pathway activity, co-expression of the ER and HER2neu  [ER+/ HER2neu3+]) and ways to inhibit the activity of the resistance pathways (palbocyclib, everolimus, etc.) have expanded the  armamentarium of endocrine-therapy for not only metastatic and  locally-advanced but also operable cases of ER+ breast cancer.

Neoadjuvant endocrine therapy with exemestane in locally advanced breast cancer: The initial results from a Brazilian breast cancer center.

2011 ◽  
Vol 29 (27_suppl) ◽  
pp. 135-135
Author(s):  
F. Marziona ◽  
A. Mattar ◽  
R. Hegg ◽  
S. J. Belloni ◽  
S. B. Rocha ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Side Effects ◽  
Neoadjuvant Chemotherapy ◽  
Advanced Breast Cancer ◽  
Clinical Response ◽  
Endocrine Therapy ◽  
Locally Advanced Breast Cancer ◽  
Locally Advanced ◽  
Neoadjuvant Endocrine Therapy ◽  
Initial Results

135 Background: Endocrine therapy is a well-established treatment for hormone-positive breast cancer, both in the adjuvant and the metastatic setting. Neoadjuvant chemotherapy has been used to increase the number of patients who are eligible for breast-conservation therapy (BCT) by inducing tumor downstaging. Neoadjuvant endocrine therapy (NET) is mostly used in patients who are not eligible for chemotherapy (almost reserved to postmenopausal patients). The clinical response with NET in postmenopausal patients with locally advanced breast cancer (LABC) and positive hormonal receptors is almost 75% with aromatase inhibitors (AI). The comparison among tamoxifen and the three AI (anastrozole, letrozole, and exemestane) shows a superiority to AI regarding BCT. There are few data in premenopausal women and NET. Methods: 29 women with rich positive hormone receptor were enrolled in the study between January to September of 2010. Patients received exemestane 25mg/day (EXE) and as we included both pre (12 patients) and postmenopausal (17 patients) women, the premenopausal ones were submitted to ooforectomy. Results: All patients were clinical stage III. In the premenopausal group 6 patients were submitted to surgery and 5 are still taking EXE. Between the two groups 9 patients were submitted to surgery, 4 showed response and are scheduling to surgery, 10 are still taking exemestane. Five patients had serious comorbidities and were submitted to radiotherapy after 9 months of EXE (one without clinical tumor) and are asymptomatic for at least 4 months. Just one patient (premenopausal) had tumor progression after 5 months of EXE and was switched to chemotherapy. Most common side effects were arthralgia/myalgia grade 1/2. Conclusions: In Brazil LABC is frequent and neoadjuvant chemotherapy is the standard treatment. We offered a treatment with a lower cost and especially lower side effects. Because of the initial stage, BCS was not possible, but we had clinical response in about 75% of the patients. This approach was good for patients with comorbidities, and despite the NET is not established for premenopausal patients our initial results encourage us to recommend it.

scholarly journals Neoadjuvant Endocrine Therapy Versus Neoadjuvant Chemotherapy in Node-Positive Invasive Lobular Carcinoma

2019 ◽  
Vol 26 (10) ◽  
pp. 3166-3177 ◽  
Author(s):  
M. J. Thornton ◽  
H. V. Williamson ◽  
K. E. Westbrook ◽  
R. A. Greenup ◽  
J. K. Plichta ◽  
...  
Keyword(s):  
Neoadjuvant Chemotherapy ◽  
Endocrine Therapy ◽  
Invasive Lobular Carcinoma ◽  
Lobular Carcinoma ◽  
Neoadjuvant Endocrine Therapy ◽  
Node Positive

Treatment effect of neoadjuvant endocrine therapy compared to neoadjuvant chemotherapy on breast cancer outcomes.

2018 ◽  
Vol 36 (15_suppl) ◽  
pp. e12630-e12630
Author(s):  
Ashley Pariser ◽  
Sarah Schellhorn Mougalian ◽  
Tannaz Sedghi ◽  
Cary Philip Gross ◽  
Brigid K. Killelea
Keyword(s):  
Breast Cancer ◽  
Neoadjuvant Chemotherapy ◽  
Endocrine Therapy ◽  
Treatment Effect ◽  
Cancer Outcomes ◽  
Neoadjuvant Endocrine Therapy ◽  
Breast Cancer Outcomes
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