ArticleBMC cancer2022
The survival impact of palliative chemotherapy dose modifications on metastatic colon cancer.
Article in BMC cancer, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Patterns of care in patients with asymptomatic stage IV colon cancer: A population-based analysis.Surgery · 2025Article
- Anticancer Potential, Phenolic Profile, and Antioxidant Properties ofAntioxidants (Basel, Switzerland) · 2025Article
- Exploring the Impact of Chemotherapy on the Emergence of Antibiotic Resistance in the Gut Microbiota of Colorectal Cancer Patients.Antibiotics (Basel, Switzerland) · 2025Review
- Differential Effects of a Telemonitoring Platform in the Development of Chemotherapy-Associated Toxicity: A Randomized Trial Protocol.Diagnostics (Basel, Switzerland) · 2024Article
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4 authors.
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Abstract
backgroundAn uninterrupted dose of oxaliplatin-based cytotoxic therapy is an essential component in the standard treatment regimen of metastatic colon cancer (mCC). Data on the impacts of dose intensity reduction on the palliative treatment for patients with mCC remain scarce. Hence, this study aimed to investigate the impact of palliative chemotherapy dose modifications (DM) on the survival of patients with mCC.
methodsPatients with stage IV colon cancer who received first-line palliative FOLFOX regimen chemotherapy between 2014 until 2018 in the Oncology Department of the National Cancer Institute were conveniently sampled retrospectively to analyse the treatment efficacy. The cumulative dose and duration of chemotherapy received by the patients were summarised as relative dose intensity (RDI) and stratified as High RDI (RDI ≥ 70%) or Low RDI (RDI < 70%). Progression-free survival (PFS) and 2-year overall survival (OS) between the two groups were analysed using Kaplan-Meier survival analysis and Cox proportional hazards models.
resultsOut of the 414 patients identified, 95 patients with mCC were eligible and included in the final analysis. About half of the patients (n = 47) completed the 12-cycle chemotherapy regimen and one patient received the complete (100%) RDI. The overall median RDI was 68.7%. The Low RDI group (n = 49) had a 1.5 times higher mortality risk than the High RDI group [OS, Hazard Ratio (HR) = 1.5, 95% Cl: 1.19-1.82] with a significant median OS difference (9.1 vs. 16.0 months, p < 0.01). Furthermore, patients with lower dose intensity showed double the risk of disease progression (PFS, HR = 2.0, 95% CI: 1.23-3.13) with a significant difference of 4.5 months of median PFS (p < 0.01). Gender and RDI were the independent prognostic factors of both OS and PFS.
conclusionReduction in the dose intensity of palliative chemotherapy may adversely affect both disease progression and overall survival among mCC patients.
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