期刊
CURRENT OPINION IN ONCOLOGY
卷 34, 期 5, 页码 587-594出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/CCO.0000000000000878
关键词
atezolizumab; breast cancer; immune checkpoint inhibitors; pembrolizumab; triple-negative breast cancer
类别
Immune checkpoint inhibitors have shown survival benefits in TNBC patients, especially when used in combination with chemotherapy. However, unresolved issues include identifying the best chemotherapy partners, additional biomarkers for maximizing clinical benefit, and potentially extending the use of ICI to other breast cancer subtypes.
Purpose of review Recently, immune checkpoint inhibitors (ICI) have demonstrated survival benefits in triple-negative breast cancer (TNBC) patients, treated in both the advanced and the early settings. Recent findings As monotherapy, ICI failed to demonstrate a superiority over chemotherapy in pretreated advanced TNBC. In the first-line setting, ICI in combination with chemotherapy have shown consistent gains in progression-free survival in programmed death-ligand 1-positive TNBC, but only pembrolizumab indisputably demonstrated a significant overall survival benefit. In early-stage TNBC patients treated with neoadjuvant chemotherapy (NAC), ICI may improve the pathological complete response (pCR) rate. In the KEYNOTE-522 trial enrolling stage II to III TNBC patients, pembrolizumab, in combination with a NAC composed of carboplatin-paclitaxel followed by anthracyclines, and continued in the adjuvant phase led to significant increases in both pCR and disease-free survival, a practice-changing result in the field. Importantly, no unexpected safety signal was observed, but the possibility of definitive ICI-related toxicities may be challenging in curable early disease. Immunotherapy is now an important component in the therapeutic management of TNBC. Unresolved issues include the best chemotherapy partners, additional biomarkers to maximize the clinical benefit, and the possible extension of its use to other breast cancer subtypes.
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