scholarly journals REDUCTION IN OVERALL SURVIVAL OF WOMEN WITH METASTATIC BREAST CANCER IN LOW- AND MIDDLE-INCOME COUNTRIES: A REFLECTION OF LACK OF ACCESS?

Author(s):  
Leonardo R. Soares ◽  
◽  
Ruffo Freitas- Junior ◽  
Edesio Martins ◽  
José C. Oliveira ◽  
...  
2018 ◽  
Vol 4 (Supplement 3) ◽  
pp. 8s-8s ◽  
Author(s):  
Anna Cabanes ◽  
Fatima Cardoso ◽  
Maia Thrift-Perry ◽  
Katherine Moose Hunt ◽  
Tauane Araújo Cruz

Purpose Patients with metastatic breast cancer (mBC) have significant unmet needs that current policies do not fully address. Methods A comprehensive analysis of national cancer control programs and breast cancer (BC) policies and programs was conducted across 16 countries representing diverse geographies, socioeconomic status, and health care systems. Key policy components were identified, aligned with the journey of a patient with BC, and evaluated using standardized criteria that measured the adoption and implementation of national cancer control program goals and mBC-specific programs. The identified gaps for patients with mBC were aligned with promising practices implemented or spearheaded by civil society that demonstrated success at filling the gaps with the objective of creating an information resource that other organizations in the field can use as practice-based evidence. Results Despite considerable BC policy development and implementation, important gaps for patients with mBC persist across all areas of the patient journey and vary between countries studied. Inadequate public awareness, lack of trained specialists, inefficient coordination of care delivery, and limited access to innovative mBC treatments are barriers to effective care in select regions in high-income countries and overall in low- and middle-income countries. In addition, the provision of palliative care remains in its infancy in low- and middle-income countries, although this is an area of increasing policy development in high-income countries. Promising practices that evaluate patient advocacy efforts have revealed that adaptable models can support policy adoption and target specific gaps through an approach that can be tailored to countries’ resource contexts. For example, advocacy efforts identified in sub-Saharan Africa used a range of tools, in collaboration with key hospitals, to address barriers at the diagnosis stage and facilitate access to care. In the United States, a Clinical Trial Helpline launched in partnership with local patient groups aims to connect patients with mBC with innovative treatment options through clinical trials. Conclusion The 70th United Nations World Health Assembly’s cancer resolution discussed the need to leverage efforts and collaborative initiatives among stakeholders. This research exemplifies successful multistakeholder engagement solutions, which are tailored to the country context, and offer targeted ideas to further policy development. Phased BC control implementation strategies must ensure that the policies and programs address the needs of both patients with early BC and of those with advanced BC. AUTHORS' DISCLOSURES OF POTENTIAL CONFLICTS OF INTEREST The following represents disclosure information provided by authors of this manuscript. All relationships are considered compensated. Relationships are self-held unless noted. I = Immediate Family Member, Inst = My Institution. Relationships may not relate to the subject matter of this manuscript. For more information about ASCO's conflict of interest policy, please refer to www.asco.org/rwc or ascopubs.org/jco/site/ifc . Anna Cabanes Research Funding: Pfizer, Genentech, Merk (Inst) Travel, Accommodations, Expenses: Pfizer, AstraZeneca Fatima Carodso Consulting or Advisory Role: Amgen, Astellas/Medivation, AstraZeneca, Celgene, Daiichi-Sankyo, Eisai, GE Oncology, Genetech, GlaxoSmithKline, Macrogenics, Merk-Sharp, Merus BV, Mylan Mundipharma, Novartis, Pfizer, Pierre-Fabre, Roche, Sanofi, Seattle Genetics, Samsung Bioepis, Teva Expert Testimony: Pfizer, Roche Maia Thrift-Perry Employment: Pfizer Stock or Other Ownership: Pfizer


Author(s):  
Pavani Chalasani ◽  
Kiah Farr ◽  
Vicky Wu ◽  
Isaac Jenkins ◽  
Alex Liu ◽  
...  

Abstract Background Treatment options for metastatic breast cancer (MBC) refractory to anthracyclines and taxanes are limited. In a phase III trial, eribulin demonstrated a significant improvement in overall survival compared to treatment of physician’s choice, but had limited tolerability because of neutropenia and peripheral neuropathy. Based on prior studies of alternative treatment schedules with other therapies, we hypothesized that a low-dose metronomic schedule of eribulin would permit patients to remain on treatment more consistently without treatment delays, resulting in longer time to progression, and improved toxicity profile. Methods We conducted a multi-site single arm, phase II trial patients with MBC. All patients were treated with metronomic eribulin (0.9 mg/m2 administered intravenously on days 1, 8, and 15 of a 28-day cycle.) Treatment was continued until the patient developed disease progression, unacceptable toxicity, or chose to stop the study. Patients must have had prior taxane exposure. The primary endpoint was progression-free survival. Secondary end points were overall survival, response rate, and clinical benefit rate. Exploratory biomarkers were performed to analyze change in levels of circulating endothelial cells (CECs), circulating endothelial precursors, and carbonic anhydrase IX (CAIX) with response to therapy. Findings We consented 86 patients and 59 were evaluable for final analysis. Median age was 59 years; 78% had HER2 negative tumors. The median progression-free survival (PFS) was 3.5 months with overall survival (OS) of 14.3 months. Objective response rate was 15% with clinical benefit rate of 48%. Reported grade 3 neutropenia and peripheral neuropathy were 18% and 5%, respectively. Treatment discontinuation due to toxicity was seen in 3% of patients. Interpretation Metronomic weekly low-dose eribulin is an active and tolerable regimen with significantly less myelosuppression, alopecia, and peripheral neuropathy than is seen with the approved dose and schedule, allowing longer duration of use and disease control, with similar outcomes compared to the standard dose regimen.


2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Corinna Keup ◽  
Vinay Suryaprakash ◽  
Siegfried Hauch ◽  
Markus Storbeck ◽  
Peter Hahn ◽  
...  

Abstract Background Single liquid biopsy analytes (LBAs) have been utilized for therapy selection in metastatic breast cancer (MBC). We performed integrative statistical analyses to examine the clinical relevance of using multiple LBAs: matched circulating tumor cell (CTC) mRNA, CTC genomic DNA (gDNA), extracellular vesicle (EV) mRNA, and cell-free DNA (cfDNA). Methods Blood was drawn from 26 hormone receptor-positive, HER2-negative MBC patients. CTC mRNA and EV mRNA were analyzed using a multi-marker qPCR. Plasma from CTC-depleted blood was utilized for cfDNA isolation. gDNA from CTCs was isolated from mRNA-depleted CTC lysates. CTC gDNA and cfDNA were analyzed by targeted sequencing. Hierarchical clustering was performed within each analyte, and its results were combined into a score termed Evaluation of multiple Liquid biopsy analytes In Metastatic breast cancer patients All from one blood sample (ELIMA.score), which calculates the contribution of each analyte to the overall survival prediction. Singular value decomposition (SVD), mutual information calculation, k-means clustering, and graph-theoretic analysis were conducted to elucidate the dependence between individual analytes. Results A combination of two/three/four LBAs increased the prevalence of patients with actionable signals. Aggregating the results of hierarchical clustering of individual LBAs into the ELIMA.score resulted in a highly significant correlation with overall survival, thereby bolstering evidence for the additive value of using multiple LBAs. Computation of mutual information indicated that none of the LBAs is independent of the others, but the ability of a single LBA to describe the others is rather limited—only CTC gDNA could partially describe the other three LBAs. SVD revealed that the strongest singular vectors originate from all four LBAs, but a majority originated from CTC gDNA. After k-means clustering of patients based on parameters of all four LBAs, the graph-theoretic analysis revealed CTC ERBB2 variants only in patients belonging to one particular cluster. Conclusions The additional benefits of using all four LBAs were objectively demonstrated in this pilot study, which also indicated a relative dominance of CTC gDNA over the other LBAs. Consequently, a multi-parametric liquid biopsy approach deconvolutes the genomic and transcriptomic complexity and should be considered in clinical practice.


2010 ◽  
Vol 2010 ◽  
pp. 1-5 ◽  
Author(s):  
Arafat Tfayli ◽  
Sally Temraz ◽  
Rachel Abou Mrad ◽  
Ali Shamseddine

Breast cancer is a major health care problem that affects more than one million women yearly. While it is traditionally thought of as a disease of the industrialized world, around 45% of breast cancer cases and 55% of breast cancer deaths occur in low and middle income countries. Managing breast cancer in low income countries poses a different set of challenges including access to screening, stage at presentation, adequacy of management and availability of therapeutic interventions. In this paper, we will review the challenges faced in the management of breast cancer in low and middle income countries.


2016 ◽  
Vol 66 ◽  
pp. 95-103 ◽  
Author(s):  
Sonya C. Tate ◽  
Valerie Andre ◽  
Nathan Enas ◽  
Benjamin Ribba ◽  
Ivelina Gueorguieva

2021 ◽  
Vol 9 (07) ◽  
pp. 422-428
Author(s):  
Rafaela Aparecida Dias de Oliveira ◽  
Lyvia Aparecida Dias de Oliveira ◽  
Marília Davoli Abella Goulart ◽  
Maria Clara Faustino Linhares

Introduction: In advanced breast cancer, local treatment is considered palliative. However, although there are some polemic opinions about the surgical treatment, some of the latest studies have emphasized that in advanced cases primary tumor resection (PTR) is related to better outcomes. This review aims to evaluate how resection of the original tumor impacts women with metastatic breast cancer, considering the most recent studies about this subject. Methods: The search was performed in MEDLINE, Scopus, PMC, Current Contents and Wiley Online Library databases; 23 articles - from 2016 to 2019 - were selected and 11 were included in this review. As inclusion criteria were considered: studies presenting outcomes about resection of the primary tumor, comparison between chemotherapy/ hormone therapy/ targeted cancer therapies and surgical intervention, studies published from 2016 to 2019 and available in English, Spanish or Portuguese. We excluded those which did not approach PTR, did not present outcomes of interest (progression-free survival comparison between PTR and systemic therapy) or only discussed systemic therapy, as well as those published before 2016. Results: It was reported in 6 studies that progression-free survival is better on those who underwent surgery. PTR was also related to longer median overall survival in women submitted to surgery, up to 16 months higher when compared to the ones who were not. Enhanced survival even pertained to surgical groups regardless of tumor size.  Conclusion: Based in the analysis, PTR in metastatic breast cancer can be related to higher overall survival.


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