(DPYD OR DPD OR [dihydropyrimidine dehydrogenase])

AND

(phenotypic OR Phenotype OR phenotyping OR uracil OR dihydrouracil)

AND

(ONCOLOGY OR CANCER)

AND

(TREATMENT OR THERAPY)

AND

(5‐FU OR fluoropyrimidines OR Fluorouracil OR capecitabine OR Teysuno OR tegafur OR S‐1)

The search was performed on the 16th of September 2020 and updated on the 10th of June 2021.