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Updated: Feb 7, 2026

Building Up a High-throughput Screening Platform to Assess the Heterogeneity of HER2 Gene Amplification in Breast Cancers
Published on: December 5, 2017
Optimizing (neo)adjuvant treatment of HER2-positive breast cancer
Reva K Basho1, Heather L McArthur2
1Breast Medical Oncology, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, 8700 Beverly Boulevard AC 1053, Los Angeles, CA 90048, USA.
Abstract:
The development of human epidermal growth factor 2 (HER2)-directed therapy has resulted in significant improvement in outcomes for patients with early-stage HER2-overexpressing (HER2+) breast cancer. In recent years, newer HER2-directed agents and novel treatment strategies have been developed with ongoing improvements in overall outcomes. However, with the addition of newer agents, there is an increasing need to risk stratify patients to maximize efficacy and minimize toxicity of treatment. De-escalation of therapy with the potential to shorten the duration of adjuvant therapy and minimize chemotherapy administration in patients with favorable disease can be considered. On the other hand, escalation of therapy with the addition of novel HER2-directed agents and extended duration of therapy in patients at high risk of relapse can help improve long-term cure rates. Herein, we discuss recent developments in neoadjuvant and adjuvant strategies for the treatment of potentially curable HER2+ breast cancer.
Insights
Newer treatments for human epidermal growth factor 2 (HER2)-positive breast cancer require risk stratification. Strategies involve de-escalating therapy for some patients and escalating for others to improve outcomes.
Area of Science:
- Oncology
- Pharmacology
Background:
- Human epidermal growth factor 2 (HER2)-directed therapies have significantly improved outcomes in early-stage HER2-overexpressing (HER2+) breast cancer.
- Recent advancements include novel HER2-directed agents and treatment strategies, leading to further improvements in patient outcomes.
Purpose of the Study:
- To discuss recent developments in neoadjuvant and adjuvant strategies for treating potentially curable HER2+ breast cancer.
- To highlight the increasing need for risk stratification to maximize treatment efficacy and minimize toxicity.
Main Methods:
- Review of recent developments in neoadjuvant and adjuvant therapies for HER2+ breast cancer.
- Discussion of risk stratification approaches, including therapy de-escalation and escalation.
Main Results:
- Therapy de-escalation may shorten adjuvant treatment duration and reduce chemotherapy in favorable-risk patients.
- Therapy escalation, involving novel agents and extended durations, may improve long-term cure rates in high-risk patients.
Conclusions:
- Risk stratification is crucial for optimizing HER2+ breast cancer treatment with newer agents.
- Tailoring treatment intensity (de-escalation or escalation) based on patient risk is key to maximizing efficacy and minimizing toxicity.
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