To evaluate the effectiveness and safety of Shengmai San in preventing anthracycline sequential trastuzumab therapy related cardiac toxicity through a prospective randomized controlled study.

This study is a randomized, controlled, open-label prospective clinical study. This study adopts an optimal design, with the main evaluation indicator being the incidence of cardiac toxicity. Patients who passed the inclusion and exclusion criteria through clinical research were randomly assigned to the experimental group and control group. Experimental(treatment)group: received preventive treatment with Shengmai Powder，and may also receive additional Chinese medicines based on the doctor's judgment and the patient's condition.Control group: during chemotherapy and trastuzumab administration, no Chinese medicine with ginseng, ophiopogon japonicus and schisandra chinensis as ingredients or western medicine with heart strengthening or heart protection function were used. During the treatment process, cardiac function related indicators such as symptomatic congestive heart failure or asymptomatic but decreased left ventricular ejection fraction (LVEF) are evaluated to determine the occurrence of cardiac toxicity.

Inclusion Criteria:

1. Non metastatic primary invasive HER2 positive breast cancer stage I-III invasive HER2 positive breast cancer is defined as the tumor invasive component HER2 immunohistochemical IHC+++or IHC++confirmed to be HER2 positive by fluorescence in situ hybridization
2. Plan to use AC sequential TH (P) adjuvant or neoadjuvant chemotherapy with anthracycline containing chemotherapy regimens (A is doxorubicin or epirubicin, C is cyclophosphamide, T is paclitaxel, liposome paclitaxel, albumin bound paclitaxel or docetaxel, H is trastuzumab, which can be combined with pertuzumab (P))，and before using anthracycline drugs, the left ventricular ejection fraction (LVEF) should be ≥ 50%
3. Plan to use trastuzumab or trastuzumab combined with pertuzumab for one year of treatment；
4. ECOG PS: 0-1 points；
5. The patient has good compliance with the planned treatment and follow-up, can understand the research process of this study, and sign a written informed consent form.

Exclusion Criteria:

1. The New York Heart Association (NYHA) classifies patients with heart disease at or above Level II (including Level II)
2. Severe heart disease or discomfort, including high-risk uncontrolled arrhythmia, etc
3. There are contraindications or intolerance to treatment with trastuzumab, including allergies to trastuzumab, and the presence of underlying heart diseases that cannot be treated with trastuzumab as determined by a specialist
4. Previously allergic to ginseng, Ophiopogon japonicus, and Schisandra chinensis
5. Unable to cooperate with treatment and follow-up.

Can apply to researchers

Open Label