1605POlanzapine combined with 5-HT3 RA plus dexamethasone for prevention and treatment of chemotherapy-induced nausea and vomiting in high and moderate emetogenic chemotherapy: A systematic review and meta-analysis of randomized controlled trials

Abstract Background We conducted a review to evaluate the efficacy and adverse events (AEs) of olanzapine combined with 5-hydroxytryptamine type 3 (5-HT3) RA plus dexamethasone compared with 5-HT3 RA plus dexamethasone for the prevention and treatment of chemotherapy-induced nausea and vomiting (CINV) in high and moderate emetogenic chemotherapy based on randomized controlled trials (RCTs). Methods PubMed, Web of Science, The Cochrane library, and EMBASE, China National Knowledge Infrastructure (CNKI), WanFang Database, China Biomedical Literature database (CBM), and Chinese Science and Technology Periodical Database (VIP) (inception to April 2019) were searched to recognize relevant articles. Relative risk (RR) with 95% confidence intervals (CIs) for CINV and AEs were all extracted. Results 11 studies with 1107 cancer patients were involved in this review. The pooled RR of acute CINV (RR = 0.60, 95%CI: 0.48–0.75, Z=-4.57, P  Conclusions Olanzapine significant decreased the occurrence of moderate-severe CINV (CINV III and IV) and insomnia for the prevention and treatment of CINV in high and moderate emetogenic chemotherapy. Compared with 10mg per day, 5mg oral may be more appropriate for cancer patients. Legal entity responsible for the study The author. Funding Has not received any funding. Disclosure The author has declared no conflicts of interest.