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[Genetic variations affect drug safety and efficacy].
Ankie M Harmsze1, Vera H Deneer, Anke Hilse Maitland-van der Zee
1Sint Antonius Ziekenhuis, afd. Klinische Farmacie, Nieuwegein, the Netherlands.
Nederlands Tijdschrift Voor Geneeskunde
|August 12, 2010
Summary
Pharmacogenetics links genetic variations to drug responses, improving treatment efficacy and safety. Genetic testing before prescribing drugs like trastuzumab and abacavir is becoming more common to predict outcomes.
Area of Science:
- Pharmacogenetics
- Genetics
- Drug Metabolism
Context:
- Interindividual variability in drug efficacy and safety is influenced by genetic variations.
- Genetic differences affect drug-metabolizing enzymes, transporters, receptors, and drug targets.
- Genotyping is increasingly used in healthcare for patients with adverse drug reactions or suboptimal treatment outcomes.
Purpose:
- To explore the role of pharmacogenetics in personalized medicine.
- To highlight the growing importance of genetic testing in clinical practice.
- To provide examples of drugs (trastuzumab, abacavir) where pre-treatment genetic screening is essential.
Summary:
- Pharmacogenetics investigates how genetic variations influence drug responses.
- Genetic variations in key drug-related proteins impact drug efficacy and safety.
- Pre-treatment genetic screening, as seen with trastuzumab and abacavir, is crucial for optimizing patient outcomes and avoiding adverse effects.
Impact:
- Increased use of genetic screening prior to drug administration is anticipated.
- Clinical decisions will increasingly rely on the correlation between genotype and treatment outcomes.
- The adoption of pharmacogenetic testing depends on the strength of genotype-outcome associations, clinical relevance, and availability of alternative therapies.
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