Overview
The purpose of this study is to evaluate the efficacy and safety of high-intensity focused ultrasound (HIFU) combined with toripalimab plus chemotherapy versus chemotherapy as neoadjuvant therapy for ER+/HER2- breast cancer.
Description
Study participants will be randomly allocated to either the experimental group or the control group and receive the following treatments. Experimental group: HIFU therapy followed by 8 cycles of neoadjuvant immunotherapy and chemotherapy; Control group: 8 cycles of neoadjuvant chemotherapy alone. Each cycle lasts 21 days. Subsequently, all participants will undergo surgery within 6 weeks after completion of neoadjuvant therapy.
Eligibility
Inclusion Criteria:
- Female patients aged 18-75 years.
- Invasive breast cancer without distant metastasis, including either T1c-T2 (≥ 2 cm), cN1-cN2, or T3-T4, cN0-cN2.
- Histopathologically confirmed ER-positive/HER2-negative, PR < 20% or Ki67 ≥ 20%, Grade 3 breast cancer.
- Eastern Cooperative Oncology Group (ECOG) performance status of 0-1.
Exclusion Criteria:
- Female patients during pregnancy or lactation.
- Diagnosis of bilateral breast cancer, occult breast cancer, or distant metastasis confirmed by pathology.
- Has an active autoimmune disease that has received systemic treatment in the last 2 years.
- Has a known history of human immunodeficiency virus (HIV), hepatitis B, or known active hepatitis C virus infection.
- Has received prior therapy with an anti-PD-1, anti-PD-L1, or anti-PD-L2 agent.
- Has a known history of invasive malignancy that required systemic treatment in the last 5 years.
- Uncontrolled concomitant diseases include severe infection, liver disease, cardiovascular disease, kidney disease, respiratory disease, diabetes, and others requiring systemic treatment.