Emerging Protein Targets in Triple-Negative Breast Cancer: Beyond Conventional Therapy

Andrea Previtali1, Isabella Guardamagna2, Silvia Calandra1

  • 1Department of Molecular Medicine, University of Pavia, 27100 Pavia, Italy.

Cancers
|February 27, 2026
PubMed

Insights

Triple-negative breast cancer (TNBC) is aggressive, but new targeted therapies show promise. This review covers emerging treatments like antibody-drug conjugates and pathway inhibitors to overcome resistance and improve outcomes for TNBC patients.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Triple-negative breast cancer (TNBC) is an aggressive subtype lacking ER, PR, and HER2 expression, presenting significant therapeutic challenges.
  • Conventional treatments like chemotherapy and immunotherapy face frequent resistance and relapse, necessitating novel therapeutic strategies.
  • Advances in proteomics, structural biology, and targeted protein degradation are identifying new targets for TNBC.

Purpose of the Study:

  • To review current and emerging therapeutic strategies for TNBC.
  • To focus on targeted approaches addressing tumor heterogeneity and resistance mechanisms.
  • To provide an updated overview of the evolving TNBC therapeutic landscape.

Main Methods:

  • Summarizing recent advances in targeted therapies including immune checkpoint inhibitors, PARP inhibitors, antibody-drug conjugates, and pathway inhibitors.
  • Examining clinical trial results for various targeted agents.
  • Exploring novel targets identified through omics approaches and the role of tumor metabolism and microenvironment.
  • Outlining innovative radiotherapy strategies.

Main Results:

  • Targeted therapies, including immune checkpoint inhibitors, PARP inhibitors, Trop-2-directed antibody-drug conjugates, and pathway inhibitors, show potential in clinical trials.
  • Integrative omics approaches are identifying novel therapeutic targets.
  • Tumor metabolism and microenvironment significantly influence therapeutic efficacy.
  • Innovative radiotherapy strategies are being developed.

Conclusions:

  • The TNBC therapeutic landscape is rapidly evolving with promising targeted approaches.
  • Biomarker-driven strategies are crucial for developing next-generation treatments.
  • Addressing tumor heterogeneity and resistance mechanisms is key to improving patient outcomes.
  • Further research into novel targets, metabolism, microenvironment, and radiotherapy integration is warranted.

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