About this trial
This is an open-label, prospective, single-arm, multicenter phase II clinical trial. The aim is to explore the efficacy and safety of radiotherapy combined with cisplatin/carboplatin, adebrelimab, and bevacizumab in patients with triple-negative breast cancer and brain metastases.
Eligibility criteria
Qualifiers
Age ≥18 years and ≤70 years, gender not limited;
ECOG score 0-2;
Pathologically confirmed HR-negative/HER2-negative breast cancer patients with evidence of local recurrence or metastasis, unsuitable for curative surgical resection or radiotherapy; HR-negative is defined as ER-negative and PR-negative, with positive tumor cells accounting for <10% of all tumor cells;
Must not have previously used platinum-based drugs, or must have previously used platinum-based drugs (cisplatin or carboplatin and only one regimen) and meet the following definition of platinum sensitivity: no progression during at least 4 cycles of platinum-based therapy, and subsequent disease progression occurring more than 3 months after the last platinum-based therapy;
Disqualifiers
Leptomeningeal metastases or cystic metastases confirmed by MRI or lumbar puncture;
Presence of third-space effusion (e.g., massive pleural effusion and ascites) that cannot be controlled by drainage or other methods;
Received whole-brain radiotherapy, chemotherapy, or surgery within 2 weeks prior to treatment with the investigational drug, or received endocrine therapy within one week prior to treatment;
Previous use of bevacizumab and PD-1/PD-L1 inhibitors, excluding the following: no disease progression during bevacizumab and PD-1/PD-L1 inhibitor use, investigators believe no drug resistance has been confirmed, and continued use would benefit the subject; short-term bevacizumab use to relieve cerebral edema;
Trial design
Treatments tested in this trial
- Radiotherapy followed by systemic therapy
- Systemic therapy followed by radiotherapy