Cutaneous toxicities associated with EGFR inhibitors (EGFRIs) have a significant impact on patient treatment continuation, quality of life and healthcare resource utilization. This paper reviews the current prophylaxis and management of EGFRI-induced cutaneous toxicities in patients with colorectal cancer, and combines these findings with the authors' clinical expertise to define a novel algorithm for healthcare professionals managing patients receiving EGFRIs. This tool includes a grading system based on the location, severity and psychological impact, and provides a standard prescription pack, advice on prophylaxis/self-management of cutaneous symptoms for patients initiating EGFRIs, and essential guidance on subsequent review and treatment escalation. It aims to optimize treatment of metastatic colorectal cancer by minimizing cutaneous toxicities to maintain dose intensity and efficacy of EGFRI-based chemotherapy.

Preoperative ECX/ECF chemotherapy for patients with resectable esophagogastric adenocarcinoma was associated with relatively high incidence of TEEs. However, only arTEEs affected patient survival outcomes.

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Aim: To determine the concordance between plasma and tissue RAS mutation status in metastatic colorectal cancer patients to gauge whether blood-based testing is a viable alternative. We also evaluated the change in mutation status on progression. Materials/methods: RAS testing was performed on plasma from patients commencing first-line therapy (OncoBEAM™ RAS CEIVD kit). Results were then compared with formalin-fixed paraffin embedded tumor samples. Results: The overall percentage agreement (concordance) was 86.0% (86/100), which demonstrates that blood-based testing is an alternative to tissue-based testing. Reproducibility was 100% between three laboratories and 20% showed changes in their RAS mutational status on progression. Conclusion: These results show good concordance between tissue and plasma samples and suggest the need for longitudinal plasma testing during treatment to guide management decisions.