Safety of Trifluridine/Tipiracil in Patients With Dihydropyrimidine Dehydrogenase Deficiency Diagnosed With Metastatic Colorectal or Gastroesophageal Cancer
The goal of this clinical trial is to test the safety of the trifluridine/tipiracil as replacement of fluoropyrimidines based chemotherapy as first line metastatic colorectal or gastroesophageal cancer regimens in patients with dihydropyrimidine dehydrogenase (DPD) deficiency.
The main questions it aims to answer are:
* Is this alternative chemotherapy option a better option in term of safety for this type of patients?
* Does the combination of treatments improves the overall safety?
* Does the combination of treatments improves the progression-free survival, overall survival, objective resp