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Updated: May 28, 2026

Studying Triple Negative Breast Cancer Using Orthotopic Breast Cancer Model
Published on: March 20, 2020
The triple-negative subtype: new ideas for the poorest prognosis breast cancer
Giuseppe Curigliano1, Aron Goldhirsch
1Department of Medicine, Division of Medical Oncology, Istituto Europeo di Oncologia, Milano 20141, Italy. giuseppe.curigliano@ieo.it
Abstract:
Triple-negative breast cancer accounts for about 15%-20% of all breast cancers. Patients with triple-negative subtype have a significantly increased risk of relapse and death. A panel of specific molecular alterations like high rate of p53 mutations, frequent loss of function of BRCA1, and several tyrosine kinase activations has been shown in this specific phenotype. An optimal chemotherapy regimen for these cancers remains to be determined, representing a major challenge for patient management. DNA alkylating agents, as cisplatin, were shown to be particularly effective in the neoadjuvant setting for patients with the disease. Targeted therapies are being successfully developed. Poly (ADP-ribose) polymerase-1 inhibitors induce tumor response as a single agent in BRCA1-mutated breast cancer and might sensitize cancer cells to cisplatin in the triple-negative subpopulation. Chemotherapy is a cornerstone of current clinical practice for this type of disease. Progress might derive from refined biology-driven phase II trials that will also integrate targeted agents with chemotherapy.
Insights
Triple-negative breast cancer (TNBC) has a high relapse risk. Cisplatin chemotherapy and targeted therapies like PARP inhibitors show promise for TNBC treatment, especially in BRCA1-mutated cases.
Area of Science:
- Oncology
- Genetics
- Pharmacology
Background:
- Triple-negative breast cancer (TNBC) comprises 15-20% of breast cancers.
- TNBC patients face elevated risks of mortality and disease recurrence.
- Specific molecular aberrations, including p53 mutations and BRCA1 dysfunction, characterize TNBC.
Purpose of the Study:
- To review current therapeutic strategies for triple-negative breast cancer.
- To explore the efficacy of chemotherapy and emerging targeted therapies.
- To identify potential advancements in TNBC management.
Main Methods:
- Literature review of studies on triple-negative breast cancer treatments.
- Analysis of data on DNA alkylating agents (e.g., cisplatin) in neoadjuvant settings.
- Evaluation of targeted therapies, including Poly (ADP-ribose) polymerase-1 (PARP-1) inhibitors.
Main Results:
- Cisplatin demonstrates effectiveness in the neoadjuvant treatment of TNBC.
- PARP-1 inhibitors show single-agent activity in BRCA1-mutated breast cancer.
- PARP-1 inhibitors may enhance cisplatin sensitivity in TNBC.
Conclusions:
- Chemotherapy remains a fundamental treatment for TNBC.
- Integrating targeted agents with chemotherapy in biology-driven trials may improve outcomes.
- Further research is needed to optimize TNBC patient management.
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