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Summary The article presents a detailed survey of recent publications in the literature concerning clinical expertise, existing guidelines, and differing opinions on Fluoropyrimidine chemotherapy-related toxicity and the implication of Dihydropyrimidine dehydrogenase (DPD) screening aiming to prevent severe 5-Fluorouracil-induced adverse drug reactions. The first section provides information on the mechanism of action, clinical application, pharmacokinetics and pharmacodynamics, and toxicity and adverse reactions of 5-Fluorouracil, Capecitabine, Floxuridine, and Flucytosine. The second section summarizes DPD phenol- and genotype data and provides reasons for determining a DPD life-threatening complete or partial enzyme deficiency. The pros and cons of the methodological approaches for DPD screening are analysed, and recommendations are made to introduce them into clinical practice. The third section includes a brief economic analysis of expenses for DPD screening of patients scheduled for 5-Fluorouracil chemotherapy. The costs are compared to those related to the treatment of patients suffering from 5-Fluorouracil-induced toxicity and unwanted adverse effects.

journal of biomedical and clinical research

Toxic and Adverse Effects of Chemotherapy with 5-Fluoropyrimidine Drugs. Could Dihydropyrimidine Dehydrogenase Enzyme Screening Serve as a Prerequisite to Successful Chemotherapy?