PMID- 37869236 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231031 IS - 1920-454X (Electronic) IS - 1920-4531 (Print) IS - 1920-4531 (Linking) VI - 14 IP - 5 DP - 2023 Oct TI - The Impact of Omitting 5-FU Bolus From mFOLFOX6 Chemotherapy Regimen on Hematological Adverse Events Among Patients With Metastatic Colorectal Cancer. PG - 392-400 LID - 10.14740/wjon1690 [doi] AB - BACKGROUND: Metastatic colorectal cancer (mCRC) is often treated with a mFOLFOX6 regimen. The 5-fluorouracil (5-FU) bolus is often omitted from the regimen to reduce the risk of hematological adverse events (AEs) in patients with poor performance status. We aimed to investigate the incidence of hematological AEs in Asian patients with mCRC who were treated with the mFOLFOX6 with and without 5-FU bolus dosing. METHODS: This retrospective chart review was conducted at King Chulalongkorn Memorial Hospital, Thailand from June 2021 to June 2022. The primary endpoints were hematological AEs. Secondary endpoints were any AEs. The comparison of continuous data was conducted with an independent t-test. The Chi-squared test was used to compare categorical data. RESULTS: From 110 patients, we found that hematological and non-hematological AEs of any grade in the two groups were not significantly different. However, patients in the bolus arm had a significantly lower absolute neutrophil count (ANC) than those in the non-bolus arm (mean difference = 43.13 (95% confidence interval (CI): 20.74, 65.51), P-value = 0.0002). A subgroup analysis in patients who received first-line treatment with mFOLFOX6 showed that the bolus arm had a significantly lower ANC (mean difference = 46.01 (95% CI: 19.99, 72.03), P-value = 0.0007). CONCLUSIONS: mCRC patients who were treated with bolus 5-FU had lower ANC. The 5-FU bolus omission from the mFOLFOX6 regimen may be required in patients with a high risk of neutropenia. CI - Copyright 2023, Areepium et al. FAU - Areepium, Nutthada AU - Areepium N AUID- ORCID: 0000-0002-9917-833X AD - Department of Pharmacy Practice, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand. FAU - Sapapsap, Bannawich AU - Sapapsap B AUID- ORCID: 0000-0002-9119-5610 AD - Division of Clinical Pharmacy, Faculty of Pharmaceutical Sciences, Burapha University, Chonburi, Thailand. LA - eng PT - Journal Article DEP - 20230920 PL - Canada TA - World J Oncol JT - World journal of oncology JID - 101564097 PMC - PMC10588498 OTO - NOTNLM OT - 5-fluorouracil OT - Adverse event OT - Metastatic colorectal cancer OT - mFOLFOX6 COIS- There is nothing to declare. EDAT- 2023/10/23 06:48 MHDA- 2023/10/23 06:49 PMCR- 2023/09/20 CRDT- 2023/10/23 04:51 PHST- 2023/07/27 00:00 [received] PHST- 2023/08/30 00:00 [accepted] PHST- 2023/10/23 06:49 [medline] PHST- 2023/10/23 06:48 [pubmed] PHST- 2023/10/23 04:51 [entrez] PHST- 2023/09/20 00:00 [pmc-release] AID - 10.14740/wjon1690 [doi] PST - ppublish SO - World J Oncol. 2023 Oct;14(5):392-400. doi: 10.14740/wjon1690. Epub 2023 Sep 20.