Pharmacogenetics in oncology: Unveiling its potential in treatment personalization and beyond.

The effectiveness and tolerability of medicines can vary considerably from person to person, even at the same dose. This variation is influenced by many factors, including constitutional genetic characteristics. In fact, some people have genetic variations that are common and neutral in the population, known as polymorphisms, which can affect drug metabolism or make them more susceptible to certain adverse effects.

Role of CYP2D6 polymorphisms in tramadol metabolism in a context of co-medications and overweight.

Very few quantitative data exist on tramadol metabolites, which hampers our understanding of their role in efficacy and safety of tramadol. We aimed to provide quantitative data on tramadol and its 5 main metabolites in a patient cohort and to determine whether metabolite ratios can be predictive of a CYP2D6 metabolism phenotype. We also aimed to investigate the influence of co-medications and patient profile (BMI, glycemia, lipid levels) on tramadol metabolite ratios.