Pharmacogenetics is associated with
The determinants of drug response, viz. transpoers, metabolizing enzymes, ion channels, receptors with their couplers and effectors are controlled genetically The study of the genetic basis for variability in drug response is called 'Pharmacogenetics'. Ref ;KD Tripathi Pharmacology 7th edition (page no;65)
individual variations in drug response due to gene variability
Environmental influence
Individual variability in oral absorption
Different mechanism of actions in different individuals
General pharmacology