Journals / Journal of Health Sciences and Medicine / 2026 / Volume: 9 Issue: 5

Correction: Comparative survival and toxicity profiles of oxaliplatin-based adjuvant regimens in stage II–III colorectal cancer: a retrospective dual-institution study

Correction: Evre II-III kolorektal kanserinde oksaliplatin bazlı adjuvan tedavi rejimlerinin karşılaştırmalı sağkalım ve toksisite profilleri: iki merkezli retrospektif bir çalışma

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2026-09-19
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Disease-free survival (DFS) and overall survival (OS) were estimated using the Kaplan–Meier method and compared with the log-rank test.

📌 3 Key Takeaways

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Objective & Hypothesis:Aims: Oxaliplatin-based chemotherapy is the standard adjuvant treatment for patients with stage III and high-risk stage II colorectal cancer (CRC).
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Key Findings & Data:Methods: Patients with resected stage III and high-risk stage II CRC treated with adjuvant oxaliplatin-based chemotherapy at two tertiary centers between 1998 and 2025 were retrospectively screened.
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Conclusion & Impact:Disease-free survival (DFS) and overall survival (OS) were estimated using the Kaplan–Meier method and compared with the log-rank test.
🔬Design:Modeling & Simulation
📍Scope:2025 Verileri
⚙️Variables:Colorectal cancer · adjuvant chemotherapy · oxaliplatin-based regimens

Abstract

Aims: Oxaliplatin-based chemotherapy is the standard adjuvant treatment for patients with stage III and high-risk stage II colorectal cancer (CRC). However, real-world data comparing the survival outcomes and toxicity profiles of commonly used regimens remain limited. To evaluate and compare the efficacy and tolerability of adjuvant FOLFOX, FLOX, and XELOX regimens in patients with resected stage III and high-risk stage II CRC treated in routine clinical practice. Methods: Patients with resected stage III and high-risk stage II CRC treated with adjuvant oxaliplatin-based chemotherapy at two tertiary centers between 1998 and 2025 were retrospectively screened. A total of 180 eligible patients were included. Disease-free survival (DFS) and overall survival (OS) were estimated using the Kaplan–Meier method and compared with the log-rank test. Multivariable Cox proportional hazards models were used to adjust for potential confounders. Treatment-related toxicities were graded according to CTCAE criteria. Results: Among 180 patients, the median DFS and OS for the entire cohort were 3.78 and 5.53 years, respectively. Median DFS estimates varied numerically across chemotherapy regimens, whereas median OS values were broadly comparable. Kaplan Meier log-rank analyses did not demonstrate statistically significant differences in DFS or OS between treatment groups. In multivariable Cox proportional hazards models adjusted for baseline clinical factors and treatment duration, chemotherapy regimen was not independently associated with OS. For DFS, however, the XELOX regimen was associated with a lower risk of recurrence compared with FOLFOX-6 (HR 0.51, 95% CI 0.28–0.94; p=0.031). Toxicity profiles varied significantly between regimens. Hematologic toxicities were more frequent with FOLFOX-6 and XELOX, whereas FOLFOX-4 showed comparatively lower rates of myelosuppression. Peripheral neuropathy was predominantly observed in the FOLFOX-6 and XELOX groups. Conclusion: Oxaliplatin-based adjuvant chemotherapy regimens achieved broadly comparable long-term survival outcomes in patients with stage III and high-risk stage II CRC. After adjustment for baseline characteristics, no regimen demonstrated a clear independent OS advantage. XELOX was associated with a modest DFS benefit without a corresponding improvement in OS. Toxicity profiles differed across regimens, particularly with respect to hematologic adverse events and peripheral neuropathy. Therefore, regimen selection in routine clinical practice should balance efficacy with patient-specific tolerability and comorbidity considerations.

Özet

Arka Plan: Oksaliplatin temelli kemoterapi, evre II–III kolorektal kanser (KRK) hastaları için standart adjuvan tedavidir. Ancak, yaygın olarak kullanılan rejimlerin sağkalım sonuçlarını ve toksisite profillerini karşılaştıran gerçek yaşam verileri sınırlıdır. Amaçlar: Rutin klinik pratiğinde tedavi edilen evre II–III CRC hastalarında adjuvan FOLFOX, FLOX ve XELOX rejimlerinin etkinlik ve tolerabilitesini değerlendirmek ve karşılaştırmak. Yöntemler: Gazi Üniversitesi Tıp Fakültesi’nde Ocak 1998–Aralık 2009 ve Ordu Üniversitesi Eğitim ve Araştırma Hastanesi’nde Ocak 2009–Şubat 2025 tarihleri arasında tedavi edilen hastalar uygunluk açısından tarandı. Dahil edilme kriterlerini karşılayan toplam 180 hasta çalışmaya alındı. Gazi Üniversitesi’nden elde edilen 80 hastalık özgün tez veri seti, istatistiksel gücü ve temsil edilebilirliği artırmak amacıyla Ordu Üniversitesi’nden eklenen 100 hasta ile genişletildi. Progressyonsuz sağkalım (PFS) ve genel sağkalım (OS) Kaplan–Meier yöntemiyle analiz edildi ve log-rank testi ile karşılaştırıldı. Toksisite profilleri CTCAE kriterlerine göre değerlendirildi. Bulgular: Tüm kohort için medyan progressyonsuz sağkalım (PFS) 3,78 yıl, medyan genel sağkalım (OS) ise 5,53 yıl olarak bulundu. Rejimler arasında PFS açısından anlamlı bir fark yoktu (p = 0.456). Buna karşın, OS anlamlı olarak farklıydı ve XELOX rejimi sağkalım açısından üstünlük gösterdi (p = 0.045). Hematolojik toksisiteler—özellikle nötropeni ve trombositopeni—en sık FOLFOX-4 rejiminde görüldü; periferik nöropati de bu grupta daha belirgindi. FLOX ise nispeten daha elverişli bir hematolojik güvenlik profiline sahipti. Sonuçlar: Oksaliplatin temelli adjuvan rejimler, evre II–III KRK hastalarında anlamlı uzun dönem sağkalım sağlamaktadır. Rejimler arasında PFS sonuçları benzer olmakla birlikte, XELOX rejimi daha iyi OS ile ilişkilidir ve toksisite paternleri belirgin şekilde farklılık göstermektedir. Bu nedenle, rejim seçimi yapılırken hem onkolojik etkinlik hem de hastaya özgü toksisite riskleri dikkate alınmalıdır.

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Cite This Article

Özyurt, N. (2026). Correction: Comparative survival and toxicity profiles of oxaliplatin-based adjuvant regimens in stage II–III colorectal cancer: a retrospective dual-institution study. Journal of Health Sciences and Medicine, Volume: 9 Issue: 5. https://ajindex.com/articles/1508167

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