期刊
SEMINARS IN ONCOLOGY
卷 48, 期 3, 页码 208-225出版社
W B SAUNDERS CO-ELSEVIER INC
DOI: 10.1053/j.seminoncol.2021.09.002
关键词
Immune checkpoint blockade; Breast cancer; Immune checkpoint molecules; PD-1; PD-L1; Immunotherapy; tumor-infiltrating lymphocytes; Triple negative breast cancer
类别
The use of immune checkpoint blockers has shown potential in enhancing immune responses in breast cancer, particularly in the triple negative subtype and earlier lines of treatment. Some patients respond well to single agent ICB and achieve durable anti-metastatic effects.
In the recent years characterized by the cancer immunotherapy revolution, attention has turned to how to potentially boost and/or generate an efficient anti-tumor immune response in breast cancer (BC). Clini-cal activity of immune checkpoint blockade (ICB) targeting PD-1 or PD-L1 in BC has been more evident in the triple negative subtype and in earlier lines of the treatment. Remarkably, some responders to single agent ICB have achieved durable responses with metastatic disease, possibly as a result of treatment-induced immunological memory. However, most BC are immunologically quiescent and current research effort s developing ICB combinations are attempting to convert cold into hot tumors by manipulat-ing the tumor microenvironment, expanding anti-tumor T cells improving efficient antigen presentation, and suppressing pro-tumor inhibitory cells. The aim of this review is to summarize existing data on the efficacy of immune checkpoint blockers as single agents and combination strategies in all BC subtypes, highlighting the BC subgroups that benefit most from ICB. (c) 2021 Elsevier Inc. All rights reserved.
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