• Medicine · Mar 2024

    Comparison of efficacy and safety of 5-FU or capecitabine combined with cisplatin and docetaxel (mDCF and mDCX) as a first-line chemotherapy regimen in her 2-negative metastatic gastric cancer patients: A retrospective study.

    • Nebi Serkan Demirci, Abdulmunir Azizy, Nail Paksoy, İzzet Doğan, Senem Karabulut, Latif Karahan, and Didem Tastekin.
    • Department of Medical Oncology, Cerrahpasa University Faculty of Medicine, Istanbul, Turkey.
    • Medicine (Baltimore). 2024 Mar 1; 103 (9): e37259e37259.

    AbstractThe prognosis of metastatic gastric cancer (GC) is poor, with a median survival time of less than a year. Capecitabine is a prodrug, metabolized by thymidine phosphorylase to its cytotoxic metabolite (5-FU). Few studies have compared capecitabine and 5-FU in mGC. In this retrospective study, we compared the efficacy and safety of modified DCF (mDCF) (docetaxel, cisplatin, and 5-FU) and modified DCX (mDCX) (docetaxel, cisplatin, and capecitabine) regimens for first-line treatment in patients with mGC. The study included 112 mGC patients treated with either mDCF (n = 69) or mDCX (n = 43) between 2010 and 2021. Demographic data, response rate, progression-free survival (PFS), overall survival (OS), and adverse events were evaluated. The complete response rate in the mDCF group was 10.1%, whereas the complete response rate in the mDCX group was 2.3%. The partial response rate for mDCF and mDCX were 29% and 37%, respectively. The 2 treatment arms of the study had the same objective rate of response and disease control rate (DCR). PFS and OS rates were comparable between the 2 groups. The median PFS in the mDCF and mDCX arms were 6.0 months (95% CI, 4.87-7.14) and 5.0 months (95% CI, 4.10-5.90) respectively (P = .08). The median OS in the mDCF and mDCX arms were 9.0 months (95% CI, 7.53-10.47) and 9.0 months (95% CI, 6.87-11.11) respectively (P = .07). Neutropenia, asthenia, stomatitis, and nausea/vomiting were the most frequently reported grade 3 to 4 adverse events (AEs). The rates of grade 3/4 AEs and dose reduction were comparable between the 2 groups. There was no treatment discontinuation due to grade 3 to 4 AE. As a first-line treatment for patients with mGC, mDCX and mDCF regimens have comparable efficacy and tolerability profiles.Copyright © 2024 the Author(s). Published by Wolters Kluwer Health, Inc.

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