Application and Utility of Pharmacogenetics in the Clinical
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The administration of pharmaceuticals presents a challenge for the healthcare system, as inappropriate drug or dose selection can result in diminished therapeutic efficacy or adverse drug reactions. Genetic variability is a major regulator of drug action which should be taken into account during drug and dose selection. The correlation of drug responses (phenotypes) to specific polymorphisms (genotype) has contributed to the development of many targeted genotyping approaches. Incorporation of such testing into the clinical laboratory requires the evaluation of current testing platform characteristics as well as the selection of appropriate polymorphisms to be tested. Here we describe known genotype – phenotype relationships pertinent to drug action and present currently available targeted genotyping platforms for pharmacogenetics (PGx) testing. We additionally discuss considerations regarding platform and polymorphism selection for successful integration of PGx testing into the clinical laboratory and attainment of clinically useful results.

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