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Breast cancer brain metastasis: Current evidence and future directions

期刊

CANCER MEDICINE
卷 12, 期 2, 页码 1007-1024

出版社

WILEY
DOI: 10.1002/cam4.5021

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blood-brain barrier; breast cancer brain metastasis; drug resistance; immunotherapy; molecular mechanisms; targeted therapy

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Breast cancer is the most common cancer in women and brain metastasis has a significant impact on patient survival and quality of life. Triple-negative breast cancer and human epidermal growth factor receptor 2-positive breast cancer are more likely to develop brain metastases. Despite advancements in breast cancer treatment, brain metastases remain the leading cause of morbidity and mortality. Lack of clinical research often leads to exclusion of breast cancer patients with brain metastases from clinical trials. Understanding the molecular mechanisms of breast cancer brain metastasis is crucial for effective treatment.
Breast cancer is the most common cancer in women and the second leading cause of cancer-related deaths after lung cancer. Metastasis of the central nervous system is a terrible event for breast cancer patients, affecting their survival and quality of life. Compared with hormone receptor-positive/human epidermal growth factor receptor 2-negative breast cancer patients, brain metastases are more likely to affect patients with triple-negative breast cancer and human epidermal growth factor receptor 2-positive breast cancer. The treatment of breast cancer has improved greatly in the last two decades. However, brain metastases from breast cancer remain the leading cause of morbidity and mortality. Patients with breast cancer brain metastasis have been in an inferior position due to the lack of clinical research in this field, and they are often explicitly excluded from almost all clinical trials. The occurrence and progression of brain metastases will result in severe cognitive impairment and adverse physical consequences, so we must have a good understanding of the molecular mechanisms of breast cancer brain metastasis. In this article, we have retrieved the latest literature of molecules and pathways associated with breast cancer brain metastasis, summarized common therapy strategies, and discussed the prospects and clinical implications of targeting the molecules involved.

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