PMID- 36401426 OWN - NLM STAT- MEDLINE DCOM- 20221122 LR - 20230103 IS - 1536-5964 (Electronic) IS - 0025-7974 (Print) IS - 0025-7974 (Linking) VI - 101 IP - 46 DP - 2022 Nov 18 TI - Efficacy and safety of metronomic chemotherapy in maintenance therapy for metastatic colorectal cancer: A systematic review of randomized controlled trials. PG - e31659 LID - 10.1097/MD.0000000000031659 [doi] LID - e31659 AB - BACKGROUND: The current studies on metronomic chemotherapy in mCRC are all aimed at patients after multi-line therapy failure, and only a few studies have focused on maintenance treatment after successful first-line therapy. METHODS: The PubMed, Embase, Cochrane Library, Wanfang, CNKI, and VIP were searched, and the relevant data was extracted, including media progression-free survival (mPFS), media overall survival (mOS), and grade 3/4 adverse events (AEs). RESULTS: We included 4 randomized controlled trials (RCTs), 2 RCTs showed that metronomic maintenance chemotherapy could significantly improve mPFS compared to observation group; another RCT showed that metronomic maintenance chemotherapy group did not have low mPFS than the bevacizumab maintenance treatment (MT). The final RCT showed that dual-agent metronomic chemotherapy combined with bevacizumab MT did not improve mPFS compared with bevacizumab MT. The 3 RCTs showed that the metronomic maintenance therapy could not effectively improve mOS in mCRC compared to observation group or bevacizumab MT, while another RCT reported that the mOS in metronomic maintenance chemotherapy group was similar to bevacizumab MT. AEs was mostly mild and manageable. Grade >/= 3 AEs are mostly nonhematological toxicity, and no deaths related to AEs were reported. CONCLUSION: This systematic review indicates that metronomic chemotherapy for mCRC MT can improve mPFS in some patients and is relatively safe. However, improvements in OS in most RCTs are arguable. Therefore, we need further studies to verify its long-term efficacy. CI - Copyright (c) 2022 the Author(s). Published by Wolters Kluwer Health, Inc. FAU - Chen, Li AU - Chen L AD - Department of Pharmacy, Wusheng People's Hospital, Wusheng county, Guangan, Sichuan, China. FAU - Cao, Xin AU - Cao X AD - General Practice Department, Clinical Medical College and The First Affiliated Hospital of North Sichuan Medical College, Nanchong, SiChuan, China. FAU - Li, Jing AU - Li J AD - Department of Pharmacy, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, SiChuan, China. FAU - Liu, ChaoMin AU - Liu C AD - Department of Oncology, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, SiChuan, China. FAU - Jiang, Ting AU - Jiang T AUID- ORCID: 0000-0002-4392-5631 AD - Department of Pharmacy, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, SiChuan, China. LA - eng PT - Journal Article PT - Systematic Review PL - United States TA - Medicine (Baltimore) JT - Medicine JID - 2985248R RN - 2S9ZZM9Q9V (Bevacizumab) SB - IM MH - Humans MH - Bevacizumab/adverse effects MH - *Colorectal Neoplasms/pathology MH - Randomized Controlled Trials as Topic MH - *Colonic Neoplasms/drug therapy MH - *Rectal Neoplasms/drug therapy MH - *Lymphoma, Follicular/drug therapy PMC - PMC9678531 COIS- The authors have no funding and conflicts of interest to disclose. EDAT- 2022/11/20 06:00 MHDA- 2022/11/23 06:00 PMCR- 2022/11/18 CRDT- 2022/11/19 01:04 PHST- 2022/11/19 01:04 [entrez] PHST- 2022/11/20 06:00 [pubmed] PHST- 2022/11/23 06:00 [medline] PHST- 2022/11/18 00:00 [pmc-release] AID - 00005792-202211180-00065 [pii] AID - 10.1097/MD.0000000000031659 [doi] PST - ppublish SO - Medicine (Baltimore). 2022 Nov 18;101(46):e31659. doi: 10.1097/MD.0000000000031659.