PMID- 38063264 OWN - NLM STAT- MEDLINE DCOM- 20240101 LR - 20240123 IS - 2045-7634 (Electronic) IS - 2045-7634 (Linking) VI - 12 IP - 24 DP - 2023 Dec TI - Addition of immune checkpoint inhibitors to chemotherapy versus chemotherapy alone in patients with triple-negative breast cancer: A systematic review and meta-analysis. PG - 21873-21884 LID - 10.1002/cam4.6760 [doi] AB - BACKGROUND: Triple-negative breast cancer (TNBC) is a relatively common malignant tumor with high mortality rates. There are limited treatment options and current therapy regimens often fall short of providing positive outcomes. The development of immune checkpoint inhibitors (ICIs) have provided a vital treatment option although efficacy has varied. Here, we review patient response to current TNBC treatment with and without the addition of ICIs. METHODS: A systematic search of PubMed, Cochrane, and EMBASE library databases was done to search eligible studies published from their inception through April 3, 2022. The primary outcome indicators used were progression-free survival (PFS), overall survival (OS), pathological complete response rate (pCR) and objective remission rate (ORR), while adverse events (AEs) were also analyzed. Publication bias and sensitivity analyses and were performed to evaluate the quality of assessment. RESULTS: Overall, the meta-analysis looked at seven randomized controlled trials (RCTs) that included 4631 patients with TNBC. Results showed an improvement in PFS for patients receiving ICI in addition to chemotherapy (CT) in both the intent-to-treat (ITT) population and PD-L1 positive patients. Increased pCR rates were observed in all patients irrespective of PD-L1 status as well as increased ORR in the ITT which was more notable in PD-L1 positive subjects. While significant improvement in OS was observed only in PD-L1 positive individuals, the use of ICIs plus CT resulted in severe adverse reactions, specifically immune-related. CONCLUSIONS: This study supports the increased efficacy of ICIs in combination with CT compared to CT alone in patients with TNBC, with the most notable benefit observed in PD-L1 positive patients. However, combination therapy increases the risk of adverse reactions which warrants further investigation. CI - (c) 2023 The Authors. Cancer Medicine published by John Wiley & Sons Ltd. FAU - Gao, Xin AU - Gao X AD - The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, China. FAU - Zhu, Ying AU - Zhu Y AD - The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, China. FAU - Wang, Peipei AU - Wang P AUID- ORCID: 0000-0003-4389-4326 AD - The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, China. FAU - Yu, Lulin AU - Yu L AD - The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, China. FAU - Ruan, Shanming AU - Ruan S AUID- ORCID: 0000-0003-1061-5255 AD - The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, China. FAU - Shen, Minhe AU - Shen M AD - The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, China. FAU - Zhang, Kai AU - Zhang K AUID- ORCID: 0000-0002-8956-6187 AD - The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, China. AD - Anji Traditional Chinese Medical Hospital, Huzhou, Zhejiang, China. LA - eng PT - Journal Article PT - Meta-Analysis PT - Systematic Review DEP - 20231208 PL - United States TA - Cancer Med JT - Cancer medicine JID - 101595310 RN - 0 (Immune Checkpoint Inhibitors) RN - 0 (B7-H1 Antigen) SB - IM MH - Humans MH - *Immune Checkpoint Inhibitors/adverse effects MH - *Triple Negative Breast Neoplasms/drug therapy MH - B7-H1 Antigen MH - Combined Modality Therapy MH - Databases, Factual MH - Pathologic Complete Response PMC - PMC10757081 OTO - NOTNLM OT - drug therapy OT - efficacy OT - immune checkpoint inhibitors OT - triple-negative breast cancer COIS- The authors declare no conflict of interest. EDAT- 2023/12/08 12:42 MHDA- 2024/01/02 11:46 PMCR- 2023/12/08 CRDT- 2023/12/08 07:48 PHST- 2023/09/05 00:00 [revised] PHST- 2023/02/26 00:00 [received] PHST- 2023/10/07 00:00 [accepted] PHST- 2024/01/02 11:46 [medline] PHST- 2023/12/08 12:42 [pubmed] PHST- 2023/12/08 07:48 [entrez] PHST- 2023/12/08 00:00 [pmc-release] AID - CAM46760 [pii] AID - 10.1002/cam4.6760 [doi] PST - ppublish SO - Cancer Med. 2023 Dec;12(24):21873-21884. doi: 10.1002/cam4.6760. Epub 2023 Dec 8.