Pharmacogenetics and drug metabolism: an Irish perspective.

Genetic factors, particularly in relation to control of liver drug metabolism, are a major cause of variability in the response to drugs. In 145 Irish subjects 48% were fast acetylators of sulphadimidine in contrast to 80% in Chinese subjects. Eleven (7.6%) of our Irish population showed an improved ability to oxidise delrisoquine. The therapeutic implications of these findings are discussed.