Clinical trials

With advancements in various treatment modalities, the survival of breast cancer patients has continuously improved. Patients with advanced breast cancer who have undergone multiple lines of therapy still have treatment options, but standard treatment protocols are lacking. Anthracyclines are a cornerstone in breast cancer treatment; however, their cumulative dose-related cardiac toxicity limits their use. Liposomal doxorubicin exhibits comparable efficacy to conventional anthracyclines and is not affected by previous cumulative doses. The combination of vinorelbine with liposomal doxorubicin shows reduced cross-toxicity, and several studies have demonstrated the effectiveness of this regimen in metastatic HER2-negative breast cancer patients. Therefore, we aim to explore whether optimizing the dosage and treatment cycle of this combination therapy can provide a viable treatment option for metastatic HER2-negative breast cancer patients who have previously received second-line or higher chemotherapy, seeking a regimen that balances efficacy and safety. This study is a single-center, single-arm Phase II clinical trial planned to enroll 30 metastatic HER2-negative breast cancer patients who have previously undergone second-line or higher chemotherapy. Participants will receive an optimized regimen of liposomal doxorubicin combined with vinorelbine, with safety assessed every cycle and efficacy evaluated every three cycles. Treatment will continue until radiographic evidence indicates disease progression, intolerable toxicity occurs, informed consent is withdrawn, or the investigator decides to discontinue treatment. Following treatment, each participant will undergo survival follow-up every three months until death, loss to follow-up, or withdrawal of consent.

This study is a prospective, multicenter, phase II randomized clinical trial. It is planned to enroll 60 patients with advanced HER2 negative breast cancer, who will be randomly assigned to the experimental group and the control group in a 1:1 ratio. The participants will receive either eribulin combined with bevacizumab or eribulin monotherapy. Every treatment cycle will last for 21 days, with weekly monitoring of blood routine, blood biochemistry and other indicators. Imaging examinations will be conducted every two cycles and the efficacy will be evaluated according to RECIST 1.1 standard. The life quality questionnaire is arranged at baseline and every 3 months after enrollment, and the long-time survival will be followed every 3 months after treatment. The primary endpoint is progression-free survival (PFS), the secondary endpoints are objective response rate (ORR), clinical benefit rate (CBR) and overall survival (OS). The investigators will also focus on the treatment-related adverse events (TRAE) and quality of life (QoL) assessment. At the same time, this study also aims to explore the resistant mechanisms of anti-angiogenic drugs. The investigators plan to collect peripheral venous blood samples at 3 time points: baseline, during treatment, and end of treatment. All the dynamic samples will be used for transcriptome sequencing to obtain the gene sets. And based on the optimal therapeutic efficacy, all the participants will be divided into response group and non-response group. GO and KEGG enrichment analysis will be subsequently performed between different therapeutic efficacy groups to draw gene interaction networks, identify key action nodes and explain the mechanism of anti-angiogenic drug resistance.