PMID- 38525371 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240326 IS - 1179-1322 (Print) IS - 1179-1322 (Electronic) IS - 1179-1322 (Linking) VI - 16 DP - 2024 TI - Efficacy and Safety of Maintenance Therapy Using Cetuximab in Patients with Metastatic Colorectal Cancer: Retrospective Study. PG - 185-197 LID - 10.2147/CMAR.S443666 [doi] AB - PURPOSE: Cetuximab (CET) combined with chemotherapy significantly improved the survival in RAS and RAF wild-type metastatic colorectal cancer (mCRC) patients, while clinical evidence was lacking on the use of maintenance therapy (MT). The study aimed to explore the role of maintenance therapy following Cetuximab + chemotherapy and the optimal Cetuximab-based maintenance therapy regimen. PATIENTS AND METHODS: We retrospectively reviewed data on the efficacy and safety of CET-based MT in patients with mCRC who achieved disease control after induction therapy. RESULTS: Eighty-one patients with mCRC who achieved disease control after CET + chemotherapy induction were enrolled. Overall median progression-free survival (PFS) was 10.5 (95% CI = 8.8-12.2) months and median maintenance/observation PFS (mnPFS) was 6.0 (95% CI = 5.0-7.0) months. Among these 81 patients, 61 patients were prescribed MT (CET alone for 21 patients and CET + chemotherapy for 40 patients). Median PFS and mnPFS in the MT group were significantly longer than those for the non-MT group. Different MT regimens did not affect PFS and mnPFS significantly. Univariate and multivariate analysis demonstrated MT, complete response/partial response during induction therapy, and absence of peritoneal metastasis to be positively associated with longer PFS and mnPFS. Treatment-related adverse events (AEs) were tolerable during MT, and AE-related deaths were not observed. CONCLUSION: MT with CET or CET + chemotherapy was an appropriate option following initial induction chemotherapy for patients with RAS and RAF wild-type mCRC. This strategy endowed survival benefits and a tolerable safety profile. CI - (c) 2024 Xuan et al. FAU - Xuan, Tiantian AU - Xuan T AD - Department of Medical Oncology, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, Shandong, People's Republic of China. FAU - Wang, Zhanmei AU - Wang Z AD - Department of Medical Oncology, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, Shandong, People's Republic of China. FAU - Meng, Sibo AU - Meng S AUID- ORCID: 0000-0003-1861-496X AD - Department of Medical Oncology, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, Shandong, People's Republic of China. FAU - Li, Jiaxin AU - Li J AD - Department of Medical Oncology, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, Shandong, People's Republic of China. FAU - Li, Jisheng AU - Li J AD - Department of Medical Oncology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People's Republic of China. FAU - Cao, Fangli AU - Cao F AD - Department of Medical Oncology, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, Shandong, People's Republic of China. FAU - Qu, Linli AU - Qu L AD - Department of Medical Oncology, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, Shandong, People's Republic of China. LA - eng PT - Journal Article DEP - 20240319 PL - New Zealand TA - Cancer Manag Res JT - Cancer management and research JID - 101512700 PMC - PMC10960546 OTO - NOTNLM OT - RAS and RAF wild-type OT - cetuximab OT - colorectal cancer OT - maintenance therapy OT - targeted therapy COIS- The authors report no conflicts of interest in this work. EDAT- 2024/03/25 06:43 MHDA- 2024/03/25 06:44 PMCR- 2024/03/19 CRDT- 2024/03/25 04:41 PHST- 2023/10/09 00:00 [received] PHST- 2024/02/28 00:00 [accepted] PHST- 2024/03/25 06:44 [medline] PHST- 2024/03/25 06:43 [pubmed] PHST- 2024/03/25 04:41 [entrez] PHST- 2024/03/19 00:00 [pmc-release] AID - 443666 [pii] AID - 10.2147/CMAR.S443666 [doi] PST - epublish SO - Cancer Manag Res. 2024 Mar 19;16:185-197. doi: 10.2147/CMAR.S443666. eCollection 2024.