Age

Any age

Sex

ALL

Healthy volunteers

Not accepted

· The patients signed the informed consent and voluntarily participated in the study.
* A definite diagnosis of any type of breast cancer.
* Receiving or has completed targeted therapies.
* Investigator judged that the patient need to receive or had received treatment or prevention for CTIT, CIN or CRA induced by targeted therapies.

· Pregnant or lactating women.
* Failure to understand the study or to obtain informed consent.
* The investigator determined other situations that are not suitable for inclusion.

Real-world Study on the Management of Hematological Toxicities Associated With Targeted Therapies for Breast Cancer