Status:

COMPLETED

HER2 TREAT Study: Retrospective Study to Estimate the Prevalence of HER2-low in Unresectable and/or Metastatic Breast Cancer Patients Who Progress on Anti-Cancer Therapy Identified as HER2-Negative From Patient Medical Records in The Gulf Cooperation Council

Lead Sponsor:

AstraZeneca

Conditions:

Breast Neoplasms

Breast Cancer

Eligibility:

FEMALE

Brief Summary

HER2-low Breast cancer (BC) has emerged as a new subtype of BC with distinct clinical, pathological, and prognostic features. Little is known about the prevalence of the HER2-low subtype in HER2-negat...

Eligibility Criteria

Inclusion

  • women ≥ 18 years of age at date of diagnosis
  • Patients must have a histological or cytological confirmed diagnosis of Unresectable or/and mBC between 01st January 2018 and 31st December 2022.
  • Patients with at least 12 months of follow-up data (from the index date) in the medical records at the participating site unless patient died.
  • Patients must have been diagnosed as HER2-negative (HER2 IHC 0, 1+, 2+/ISH-), regardless of hormone status.
  • Patients who are diagnosed and/or progressed on at least one prior systemic anticancer therapy (e.g., ET, chemotherapy, CDK4/6i, targeted therapies other than anti- HER2, or immunotherapy) in the metastatic setting.
  • Patients must have historical HER2 fixed tissue IHC stained slides in acceptable quality to allow retesting of HER2 expression only in case of the absence of accurate scoring of IHC/ISH in pathology report.

Exclusion

  • Have a history of other malignancies other than basal cell carcinoma of the skin and squamous cell carcinoma of the skin.
  • Patients who are HER2 positive (with historical HER2 status of IHC 2+/ISH+ or 3+, or HER2 amplified.

Key Trial Info

Start Date :

March 5 2024

Trial Type :

OBSERVATIONAL

Allocation :

ACTUAL

End Date :

September 30 2024

Estimated Enrollment :

517 Patients enrolled

Trial Details

Trial ID

NCT06125314

Start Date

March 5 2024

End Date

September 30 2024

Last Update

September 23 2025

Active Locations (7)

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Page 1 of 2 (7 locations)

1

Research Site

Kuwait City, Kuwait

2

Research Site

Doha, Qatar

3

Research Site

Mecca, Saudi Arabia, Saudi Arabia

4

Research Site

Riyadh, Saudi Arabia