Abstract
Purpose
The use of immune checkpoint inhibitors in combination with chemotherapy for the treatment of triple-negative breast cancer is becoming more widespread as efficacy data accumulates. However, outcomes remain less than optimal and not all patients benefit from treatment. The aim of this article is to review the emerging chemoimmunotherapy strategies for triple-negative breast cancer.
Methods
Searches were undertaken on Pubmed and Clinicaltrials.gov for relevant publications and trials.
Results
Preclinical and clinical data have provided insights into the differing immunomodulatory effects of chemotherapy agents, highlighting the immunostimulatory properties of anthracyclines. Mechanisms of resistance to immune checkpoint inhibition are discussed and the potential role of phosphatidylinositol 3-kinase (PI3K)/AKT and MAPK/ERK kinase (MEK) inhibitors in overcoming resistance. Finally, the emerging therapeutic class of antibody–drug conjugates for triple-negative breast cancer in combination with immune checkpoint inhibitors is reviewed.
Conclusions
The type and sequence of chemotherapy agents play an important role in optimising the response to immune checkpoint inhibitors. Antibody–drug conjugates in combination with immune checkpoint inhibitors are a promising area of development.
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Data availability
Not applicable.
Code availability
Not applicable.
Abbreviations
- ADC:
-
Antibody–drug conjugate
- CI:
-
Confidence interval
- CSF-1R:
-
Colony stimulating factor-1 receptor
- DC:
-
Dendritic cell
- DFI:
-
Disease free interval
- DFS:
-
Disease free survival
- FDA:
-
Food and Drug Administration
- HR:
-
Hazard ratio
- ICI:
-
Immune checkpoint inhibitor
- IFNγ:
-
Interferon γ
- ITT:
-
Intention to treat
- MAPK:
-
Mitogen activated protein kinase
- MDSC:
-
Myeloid-derived suppressor cells
- MEK:
-
MAPK/ERK kinase
- MHC:
-
Major histocompatibility complex
- NK:
-
Natural killer cell
- ORR:
-
Objective response rate
- OR:
-
Odds ratio
- OS:
-
Overall survival
- PARP:
-
Poly-ADP ribose polymerase
- pCR:
-
Pathological complete response
- PD-1:
-
Programmed death 1
- PD-L1:
-
Programmed death ligand 1
- PFS:
-
Progression free survival
- PI3K:
-
Phosphatidylinositol 3-kinase
- TAM:
-
Tumour associated macrophage
- TIL:
-
Tumour infiltrating lymphocyte
- TGFβ:
-
Transforming growth factor β
- TMB:
-
Tumour mutational burden
- TME:
-
Tumour microenvironment
- TNBC:
-
Triple-negative breast cancer
- VEGF:
-
Vascular endothelial growth factor
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This was an invited review. The literature search and initial draft manuscript were done by PEH. PS critically revised the manuscript.
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PEH has received honoraria from Pfizer, Eisai, MSD and conference expenses from Lilly. PS has received honoraria from AstraZeneca, Pfizer, Novartis, Roche; has a consulting or advisory role with Genentech/Roche, AstraZeneca, Merck, Boehringer Ingelheim, Bayer, Pfizer, Novartis, Eisai, Celgene, Puma Biotechnology; has received institutional research funding from AstraZeneca, Astellas Pharma, Medivation, Oncogenex, Genentech, Novartis, Roche, Merck; has an immediate family member employed by Roche.
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Hall, P.E., Schmid, P. Emerging strategies for TNBC with early clinical data: new chemoimmunotherapy strategies. Breast Cancer Res Treat 193, 21–35 (2022). https://doi.org/10.1007/s10549-022-06547-x
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DOI: https://doi.org/10.1007/s10549-022-06547-x