Dihydropyrimidine Dehydrogenase Genotype-Phenotype Correlations in Plasma and Peripheral Blood Mononuclear Cells.
The chemotherapeutic 5-fluorouracil (5-FU) is commonly used to treat solid tumors, especially colorectal cancer. Deleterious variants in DPYD, which encodes dihydropyrimidine dehydrogenase (DPD), are strongly associated with severe and potentially lethal 5-FU toxicity. Phenotypic assays for DPD function have been propo...