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Reimagining Deintensification for Low-Risk Breast Cancer.

Chirag Shah1, Megan Kruse2, Zahraa Al-Hilli3

  • 1Department of Radiation Oncology, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH.

JCO Oncology Practice
|October 15, 2024
PubMed
Summary
This summary is machine-generated.

Research is exploring deintensification strategies for low-risk breast cancer to improve treatment outcomes. This includes reducing surgery, radiation, and chemotherapy, with a focus on personalized, less invasive approaches.

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Area of Science:

  • Oncology
  • Surgical Oncology
  • Radiation Oncology
  • Medical Oncology

Background:

  • Improving outcomes for low-risk breast cancer necessitate treatment deintensification.
  • Current paradigms focus on enhancing the therapeutic ratio by reducing treatment toxicity.
  • Deintensification strategies are being explored across surgery, radiation, and systemic therapy.

Purpose of the Study:

  • To review and summarize current deintensification approaches in breast cancer treatment.
  • To highlight advancements in surgical, radiotherapeutic, and systemic therapy deintensification.
  • To propose future interdisciplinary deintensification strategies for low-risk breast cancer.

Main Methods:

  • Review of recent studies and clinical trials in breast cancer treatment deintensification.
  • Analysis of data regarding surgical margin, axillary surgery, radiation therapy duration and target, and systemic therapy utilization.
  • Synthesis of findings to identify trends and future directions in breast cancer management.

Main Results:

  • Surgical deintensification includes narrower margins, reduced re-excisions, and decreased need for axillary lymph node dissection or sentinel lymph node biopsy.
  • Radiation therapy deintensification has led to shorter treatment durations (e.g., five treatments) and reduced treatment targets.
  • Systemic therapy deintensification involves reduced chemotherapy use via genomic assays and potential endocrine therapy dose reduction for ductal carcinoma in situ.

Conclusions:

  • Deintensification efforts have successfully reduced treatment burden in breast cancer.
  • Future research should focus on interdisciplinary approaches, such as comparing radiation therapy alone versus endocrine therapy alone for select low-risk cases.
  • Optimizing the therapeutic ratio remains a key goal for improving patient quality of life.