• Ann K Daly.
• Institute of Cellular Medicine, Newcastle University, Framlington Place, Newcastle upon Tyne NE2 4HH, UK.
• Br. Med. Bull. 2017 Dec 1; 124 (1): 65-79.

BackgroundPharmacogenetics is not a new subject area but its relevance to drug prescribing has become clearer in recent years due to developments in gene cloning and DNA genotyping and sequencing.Sources Of DataThere is a very extensive published literature concerned with a variety of different genes and drugs.Areas Of AgreementThere is general agreement that pharmacogenetic testing is essential for the safe use of drugs such as the thiopurines and abacavir.Areas Of ControversyWhether pharmacogenetic testing should be applied more widely including to the prescription of certain drugs such as warfarin and clopidogrel where the overall benefit is less clear remains controversial.Growing PointsPersonal genotype information is increasingly being made available directly to the consumer. This is likely to increase demand for personalized prescription and mean that prescribers need to take pharmacogenetic information into account. Projects such as 100 000 genomes are providing complete genome sequences that can form part of a patient medical record. This information will be of great value in personalized prescribing.Areas Timely For Developing ResearchDevelopment of new drugs targeting particular genetic risk factors for disease. These could be prescribed to those with an at risk genotype.© The Author 2017. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com

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