A Study to Describe the Real-world Treatment Patterns and Associated Outcomes in Patients of China With HER2-positive Unresectable or Metastatic Breast Cancer

Daiichi Sankyo865 enrolled

Overview

This is a multicenter, non-interventional, retrospective, real-world study that enrolled patients diagnosed with HER2-positive unresectable or metastatic breast cancer. This study will be conducted to understand the treatment pattern and sequencing of therapies, survival outcomes, and associated burden of toxicities with line of treatment in the real world.

The treatment landscape has changed dramatically with the lack of real-world evidence for usage and the efficacy of newly approved drugs in China. This multicenter, retrospective, non-interventional study will include patients newly diagnosed with HER2-positive unresectable or metastatic breast cancer, or first recurrent from early breast cancer. The primary objective of this real-world study is to describe the treatment patterns of HER2-positive unresectable or metastatic breast cancer in China. Secondary objectives will include describing the demographic and clinicopathological characteristics of patients, efficacy of different treatment regimens, treatment options and efficacy of brain metastases, and safety and tolerability of different treatment regimens in patients with HER2-positive unresectable or metastatic breast cancer.

Study Type

OBSERVATIONAL

Enrollment

865

Conditions

HER2-positive Breast Cancer

Interventions

Electronic medical record and hospital information system or other available resourcesOTHER

This is a non-interventional study. No study medication will be provided to the participants.

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Male or female patients ≥ 18 years of age at the time of diagnosis of unresectable or metastatic breast cancer * Participants with first diagnosis of unresectable or metastatic breast cancer, or first recurrence of HER2-positive breast cancer since January 1, 2020. Participants were eligible if they were HER2-positive in the early operable stage and HER2-negative in the advanced stage. HER2 positive was defined with the reference to the Chinese guidelines for HER2 positive breast cancer at the time of testing * Participants have received at least one systemic therapy for advanced breast cancer Exclusion Criteria: * Participants with concomitant cancer at the time of diagnosis of HER2-positive unresectable or metastatic breast cancer, except for the non-metastatic non-melanoma skin cancers, or in situ or benign neoplasms; a cancer is considered concomitant if it occurs within 5 years of HER2-positive breast cancer diagnosis. * Participants who are/were currently/previously enrolled in a clinical trial and have not been unblinded during the data collection interval of the study * Participants with critical missing data from their medical records or other patients deemed by the investigator to be ineligible for inclusion

Locations (5)

Sun Yat-sen University Cancer Center

Guangzhou, China

Zhejiang Cancer Hospital

Hangzhou, China

Affiliated Cancer Hospital of Shandong First Medical University

Jinan, China

Liaoning Cancer Hospital

Shenyang, China