Retrospective Analysis of Kampo Medicine's Role in Mitigating Endocrine Therapy Side Effects in Breast Cancer Patients: A Pilot Investigation - Summary - MDSpire

Retrospective Analysis of Kampo Medicine's Role in Mitigating Endocrine Therapy Side Effects in Breast Cancer Patients: A Pilot Investigation

  • By

  • Shin Takayama

  • Atsuhiko Furuta

  • Haruhiko Shindo

  • Ryutaro Arita

  • Kaolu Sato

  • Tadashi Ishii

  • February 26, 2026

  • 0 min

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Objective:

To evaluate the efficacy of Kampo medicines in managing endocrine therapy-related side effects in breast cancer patients from July 2017 to June 2024.

Key Findings:
  • 90% of complaints were related to vasomotor, motor/sensory, and psychiatric symptoms.
  • 75% of patients reported NRS scores of 3 or less after 6 months.
  • KBG/KBGY was significantly associated with symptom relief (Hazard Ratio 4.18; p = 0.046).
  • Patients on KBG/KBGY experienced faster symptom improvement compared to those on other Kampo medicines (p = 0.022).
Interpretation:

Kampo medicines, particularly KBG/KBGY, are effective in alleviating side effects of endocrine therapy in breast cancer patients, significantly improving quality of life compared to other treatments.

Limitations:
  • Retrospective design may introduce bias.
  • Limited sample size restricts generalizability.
  • Potential confounding factors not fully controlled, and exclusion criteria may impact results.
Conclusion:

Kampo medicines, especially KBG/KBGY, show promise in reducing overall symptoms in breast cancer patients undergoing endocrine therapy, highlighting the need for further research.

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