RecruitingNCT06928818

Trastuzumab Emtansine(T-DM1) After Trastuzumab Deruxtecan(T-DXd) in HER2-Positive Breast Cancer in Korea

Prospective Observational Study of Trastuzumab Emtansine Immediately After Trastuzumab Deruxtecan in Patients With Advanced Human Epidermal Growth Factor Receptor 2-Positive Breast Cancer in Korea


Sponsor

Seoul National University Hospital

Enrollment

100 participants

Start Date

Feb 26, 2025

Study Type

OBSERVATIONAL

Conditions

Summary

Prospective observational study of trastuzumab emtansine immediately after trastuzumab deruxtecan in patients with advanced HER2-positive breast cancer in Korea


Eligibility

Min Age: 19 Years

Inclusion Criteria3

  • HER2-positive, advanced (unresectable locally advanced or metastatic) breast cancer
  • Prior treatment with trastuzumab deruxtecan(T-DXd) in the advanced setting
  • Intention to treat with Trastuzumab Emtansine (T-DM1) as first therapy upon T-DXd progression

Exclusion Criteria4

  • Any systemic treatment, other than T-DM1, for breast cancer after trastuzumab deruxtecan (As an exception, patients treated with endocrine agents, not in combination with cytotoxics or antibody-drug conjugates, will be permitted in the study)
  • Has been previously treated with T-DM1 for advanced breast cancer
  • Has been previously treated with 4 or more lines of therapy for advanced breast cancer
  • Half (50%) or more patients will be those who were treated with second-line trastuzumab deruxtecan (i.e. patients at the later line will be capped).

Locations(1)

Seoul National University Hospital

Seoul, South Korea

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NCT06928818


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