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Novel Strategies to Fight Metastatic Breast Cancer

A special issue of Cancers (ISSN 2072-6694). This special issue belongs to the section "Molecular Cancer Biology".

Deadline for manuscript submissions: 31 March 2026 | Viewed by 1001

Special Issue Editors


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Guest Editor
Medical Faculty of Porto University and Institute of Molecular Pathology and Immunology of Porto University (IPATIMUP), 4200-135 Porto, Portugal
Interests: molecular pathology; cytopathology; breast cancer
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Special Issue Information

Dear Colleagues,

Breast cancer remains the most common malignancy among women and the second cause of cancer-related mortality in females. This highly heterogeneous disease is classified based on molecular and histological characteristics. Considering their molecular classification, tumours are divided into four main subtypes, determined by the expression levels of hormone receptors (HRs), human epidermal growth factor receptor 2 (HER2), and Ki-67. Therefore, depending on the tumour classification, different prognoses and treatment options are conferred. Despite the advances in early tumour detection, surgery, radiotherapy, and chemotherapy, several challenges persist in breast cancer treatment, especially due to drug resistance, resulting in tumour recurrence and metastasis. Recently, several studies have focused on understanding the evolution of breast tumours, exploring, for example, metabolic reprogramming and immune responses with the aim of finding new therapeutic targets.

Thus, continuous investigation in this area, especially in metastatic disease, and searching for new biomarker predictors of metastasis and new targetable pathways/mutations are crucial to improving patients’ outcomes and increasing the application of personalized medicine.

This Special Issue aims to provide a comprehensive update on metastatic breast cancer therapy, emphasizing novel targetable mutations, mechanisms of resistance, and new biomarkers that can predict breast tumour metastasis, allowing for early targeted treatment and disease monitoring. We welcome original articles and reviews addressing these advances.

We look forward to your contributions. 

Prof. Dr. Fernando Schmitt
Prof. Dr. Nuno Vale
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Cancers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • breast cancer
  • metastasis
  • targeted therapy
  • biomarkers
  • personalized medicine
  • prognosis

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Published Papers (1 paper)

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Review

34 pages, 2643 KB  
Review
Interplay Between MicroRNAs and Breast Cancer Therapies: Personalized Therapeutic Potential for HER2-Low Breast Cancer
by Eduarda Carvalho, Fernando Schmitt and Nuno Vale
Cancers 2025, 17(22), 3672; https://doi.org/10.3390/cancers17223672 - 16 Nov 2025
Viewed by 788
Abstract
HER2-low breast cancer has been recognized as a heterogenous group of tumors influenced by hormone receptor (HR) expression, giving rise to tumors with either a luminal-like phenotype or features resembling triple-negative breast cancer (TNBC). Despite the development of HER2-targeted therapies, several studies have [...] Read more.
HER2-low breast cancer has been recognized as a heterogenous group of tumors influenced by hormone receptor (HR) expression, giving rise to tumors with either a luminal-like phenotype or features resembling triple-negative breast cancer (TNBC). Despite the development of HER2-targeted therapies, several studies have demonstrated their limited efficacy in patients diagnosed with HER2-low breast cancer. However, recent research has led to the development of antibody-drug conjugates (ADCs), such as trastuzumab emtansine (T-DM1) and trastuzumab deruxtecan (T-DXd), with the latter showing promising results in treating these patients. Despite this breakthrough, the availability of a single effective therapy fails to account for tumor heterogeneity and may contribute to the emergence of therapy resistance, leaving HER2-low patients without treatment options. MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene expression at a post-transcriptional level and are capable of modulating key cellular processes. Recent studies have highlighted their potential as therapeutic targets, contributing to the advancement of personalized, patient-center therapies. In this context, the interplay between miRNAs and HER2-targeted therapies, particularly their modulation of common essential genes and signaling pathways, could reshape HER2-low therapy strategies to transform current practices aimed at improving the overall patient outcomes. Therefore, this review aims to elucidate the mechanisms underlying current HER2-targeted therapy and explore a potential crosstalk with miRNAs, ultimately serving as a guide for the development of personalized therapeutic strategies. Full article
(This article belongs to the Special Issue Novel Strategies to Fight Metastatic Breast Cancer)
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