Real-world Study of UTD1 in Chinese Advanced Breast Cancer

An Observational, Real-world Study Study of UTD1 in Chinese Advanced Breast Cancer

To evaluate the efficacy and safety of UTD1 in patients with advanced breast cancer.

Inclusion Criteria:

1. Patients aged over 18 years old.
2. Metastatic breast cancer included unresectable locally advanced breast cancer, de novo stage IV breast cancer, and recurrent metastatic breast cancer.
3. Plan to receive or has received UTD1 monotherapy or UTD1 based therapy
4. Available medical history.

Exclusion Criteria:

1.Incomplete medical history.