PMID- 34976837 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220429 IS - 2234-943X (Print) IS - 2234-943X (Electronic) IS - 2234-943X (Linking) VI - 11 DP - 2021 TI - Immune Checkpoint Inhibitors Combined With Chemotherapy Compared With Chemotherapy Alone for Triple-Negative Breast Cancer: A Systematic Review and Meta-Analysis. PG - 795650 LID - 10.3389/fonc.2021.795650 [doi] LID - 795650 AB - BACKGROUND: It is still controversial whether immune checkpoint inhibitors (ICIs) can improve the curative effect when added to original standard chemotherapy treatment for triple-negative breast cancer (TNBC). We compared their antitumor efficacy and adverse effects (AEs) to make a better clinical decision. METHODS: Seven databases were searched for eligible articles. Progression-free survival (PFS), overall survival (OS), and AEs were measured as the primary outcomes. RESULTS: Nine randomized controlled trials (RCTs) involving 4,501 patients were included. ICI+chemotherapy treatment achieved better PFS (hazard ratio [HR]: 0.78, [0.70-0.86], p < 0.00001), OS (HR: 0.86, [0.74-0.99], p = 0.04), and complete response (584/1,106 vs. 341/825, risk ratio [RR]: 1.38, [1.01-1.89], p = 0.04). With the prolongation of survival, the survival advantage of ICI+chemotherapy increased compared with chemotherapy. Subgroup analysis suggested that the addition of ICIs might not have a better effect in Asian patients, patients with locally advanced disease, or patients with brain metastases. In the toxicity analysis, more Grade 3-5 AEs and serious AEs were found in the ICI+chemotherapy group. For Grade 3-5 AEs, more cases of diarrhea, severe skin reactions, pneumonitis, hepatitis, and adrenal insufficiency were related to the ICI+chemotherapy group. CONCLUSIONS: ICI+chemotherapy appears to be better than chemotherapy alone for TNBC treatment, with better OS and PFS. However, its high rates of serious AEs need to be taken seriously. SYSTEMATIC REVIEW REGISTRATION: PROSPERO Registration: CRD42021276394. CI - Copyright (c) 2021 Ji, Ding, Hao, Luo, Huang and Zhang. FAU - Ji, Qiao AU - Ji Q AD - Department of Radiation Oncology, The Third Hospital of Nanchang, Nanchang, China. FAU - Ding, Jingxian AU - Ding J AD - Department of Radiation Oncology, The Third Hospital of Nanchang, Nanchang, China. FAU - Hao, Meiqi AU - Hao M AD - Department of Breast surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China. AD - Jiangxi Medical College, Nanchang University, Nanchang, China. FAU - Luo, Nachuan AU - Luo N AD - Jiangxi Medical College, Nanchang University, Nanchang, China. AD - Department of Oncology, The Second Affiliated Hospital of Nanchang University, Nanchang, China. FAU - Huang, Jiabing AU - Huang J AD - Department of Cardiovascular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China. FAU - Zhang, Wenxiong AU - Zhang W AD - Department of Thoracic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China. LA - eng PT - Systematic Review DEP - 20211216 PL - Switzerland TA - Front Oncol JT - Frontiers in oncology JID - 101568867 PMC - PMC8716854 OTO - NOTNLM OT - chemotherapy OT - immune checkpoint inhibitors OT - meta-analysis OT - systematic review OT - triple-negative breast cancer COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/01/04 06:00 MHDA- 2022/01/04 06:01 PMCR- 2021/01/01 CRDT- 2022/01/03 05:47 PHST- 2021/10/15 00:00 [received] PHST- 2021/11/22 00:00 [accepted] PHST- 2022/01/03 05:47 [entrez] PHST- 2022/01/04 06:00 [pubmed] PHST- 2022/01/04 06:01 [medline] PHST- 2021/01/01 00:00 [pmc-release] AID - 10.3389/fonc.2021.795650 [doi] PST - epublish SO - Front Oncol. 2021 Dec 16;11:795650. doi: 10.3389/fonc.2021.795650. eCollection 2021.