Search results for "R2"
showing 10 items of 285 documents
Safety of trastuzumab, alone or in combination, in elderly patients with HER2-positive breast cancer: A 5-year case series.
2012
e11056 Background: Breast cancer (BC) is frequent in the elderly and is burdened by high recurrence and death rates, due mostly to undertreatment. Trastuzumab (T), in combination with chemotherapy (CT) or hormonotherapy (HT), is a well-established treatment strategy for early and advanced HER2-positive (HER2+) breast cancer, but has been poorly studied in the elderly setting due to its infrequency. The aim of our study is to assess the safety of T in elderly patients with HER2+ BC. Methods: Between 2005 and 2010, consecutive HER2+ breast cancer patients of ≥70 years of age referred to two oncology centers and that received T-based therapy were retrospectively reviewed. All patients were tr…
A phase I dose escalation and expansion study of the next generation oral SERD AZD9833 in women with ER-positive, HER2-negative advanced breast cancer
2020
1024 Background: AZD9833 is an oral selective estrogen receptor (ER) antagonist and degrader (SERD) that has shown antitumor efficacy in a range of preclinical models of breast cancer. Methods: SERENA-1 (NCT03616587) is an ongoing Phase 1, open-label study in pre- and post-menopausal women, after ≥1 endocrine therapy and ≤2 prior chemotherapies for ER+ HER2- advanced breast cancer (ABC). The primary objective is to determine the safety and tolerability of AZD9833 once daily (QD), with dose-limiting toxicities (DLTs) in 28d defining the maximum tolerated dose. Secondary objectives include pharmacokinetics and anti-tumor response. Pharmacodynamic (PD) analysis includes ER modulation in paire…
Impact of the EndoPredict-clin score on risk stratification in ER-positive, HER2-negative breast cancer after considering clinical guidelines.
2012
542 Background: Many ER-positive, HER2-negative breast cancer patients are treated by adjuvant chemotherapy according to current clinical guidelines. We retrospectively assessed whether the combined gene expression/ clinicopathological EndoPredict-clin (EPclin) score improved the accuracy of risk classification in addition to considering clinical guidelines. Methods: Three clinical breast cancer guidelines (National Comprehensive Cancer Center Network (NCCN), German S3 and St. Gallen 2011), and the EPclin score - assessed by quantitative RT-PCR in formalin-fixed paraffin-embedded tissue - were used to assign risk groups in 1,702 ER-positive, HER2-negative breast cancer patients from two ra…
Breast-conserving surgeries in HER-positive breast cancer patients are performed too rarely in Poland
2020
Breast cancer is the most common cancer among women in Poland and worldwide; after lung cancer it is the second highest cause of death among females with malignancies. HER2 positive breast cancer occurs in ca.15–20% of all cases. More often than other subtypes, it affects younger patients and more often spreads metastasises to internal organs. The new drugs against the HER2 receptor significantly improve patients’ prognoses, regardless of the initial stage. The authors of the study involved 1503 patients with HER2 positive breast cancer from all stages (I–IV); 482 patients received preoperative systemic therapy (chemotherapy or hormonal therapy), 385 trastuzumab. Among the 1219 females qual…
Efficacy of trastuzumab re-therapy in routine treatment of HER2-positive breast cancer patients who relapsed after completed (neo-)adjuvant anti-HER2…
2013
602 Background: Addition of trastuzumab (Roche; T) to chemotherapy (CT) has improved outcomes in patients (pts) with HER2+ breast cancer at all stages, including locally advanced and metastatic disease. Anti-HER2 re-treatment with T is an increasingly used therapy option for the treatment of recurrent/metastatic breast cancer (MBC). However, limited data on T re-treatment is currently available. Methods: Patients with locally recurrent and/or MBC who received T re-therapy were included in this non-interventional study. Among 232 pts enrolled at 121 sites in Germany, 174 pts (33 locally recurrent disease, 141 MBC) were already sufficiently documented to be analyzed for efficacy of T re-ther…
Targeting breast cancer initiating cells: advances in breast cancer research and therapy
2014
Over the past 10 years there have been significant advances in our understanding of breast cancer and the important roles that breast cancer initiating cells (CICs) play in the development and resistance of breast cancer. Breast CICs endowed with self-renewing and tumor-initiating capacities are believed to be responsible for the relapses which often occur after various breast cancer therapies. In this review, we will summarize some of the key developments in breast CICs which will include discussion of some of the key genes implicated: estrogen receptor (. ER), HER2, BRCA1, TP53, PIK3CA, RB, P16INK1 and various miRs as well some drugs which are showing promise in targeting CICs. In additio…
Letter to the Editor regarding the paper by Aurilio et al., A meta-analysis of oestrogen receptor, progesterone receptor and human epidermal growth f…
2014
Sir,We have read with great interest the article in press ofAurilio et al., A meta-analysis of oestrogen receptor, pro-gesterone receptor and human epidermal growth factorreceptor 2 discordance between primary breast cancerand metastases (http://dx.doi.org/10.1016/j.ejca.2003.10.004), which will appear in Eur J Cancer. In the paper,the Authors have performed a meta-analysis of the stud-ies published in the literature concerning the discor-dance rate in oestrogen receptor (ER), progesteronereceptor (PgR) and HER2 status between primarytumour and corresponding relapse. It is well known thata considerable controversy concerns the issue of hor-mone receptors (HRs) expression as well as HER2 sta…
HER2 status in advanced gastric carcinoma: A retrospective multicentric analysis from Sicily.
2013
According to the ToGA trial, HER2 has been shown to be predictive for the success of treatment with trastuzumab in advanced gastric cancer (AGC). A number of studies have analyzed HER-2/neu overexpression in gastric carcinoma and identified the rate of HER2 positivity to be markedly varied. To date, the prevalence of HER2 overexpression in Sicilian people with AGC is unknown. Therefore, in the present study, a retrospective immunohistochemical analysis of HER2 was performed in a cohort of 304 AGC samples that were obtained from the archives of 10 Sicilian anatomopathological diagnostic units in order to verify the positive rate of HER2-positive cases. Furthermore, the characteristics of his…
Aggressive Intrinsic Subtypes in Breast Cancer: A Predictor of Guideline Adherence in Older Patients With Breast Cancer?
2015
Treatment side effects, comorbidities, and guideline-adherent treatment (GL+) influence the oncologic outcome of older breast cancer patients (oBCP) (age ≥ 70 years). The focus of this analysis was to investigate the associations among tumor characteristics, guideline adherence, and outcome and to compare these associations between younger breast cancer patients (yBCP) (age 50-69 years) and oBCP.This is a retrospective multicenter cohort study with 17 participating certified breast cancer centers. The analysis of 10,897 patient records collected from 1992 to 2008 for GL+ and clinical outcome was performed. Tumor and patient characteristics and their associations with GL+ were compared betwe…
A prognostic miRNA based signature in early-stage HER2-positive breast cancer patients.
2021
e12600 Background: In early-stage HER2+ breast cancer (BC), escalation or de-escalation of systemic treatment is an unmet need. Integration of promising biomarkers into risk scoring will further help progressing in the field. We aim to develop a prognostic signature that integrates two miRNAs (A and B) and quantitative and qualitative clinical variables in patients diagnosed with HER2+ BC. Methods: This study was conducted in a retrospective cohort of 45 HER2+ BC patients. Patients received standard treatment for localized disease. We calculated a prognostic signature for disease-free survival (DFS) using principal components analysis for mixed data combining clinicopathological data (Ki67…