On June 1, 2018, VA authors issue a report in Genetics in Medicine strongly advocating wider use of pharmacogenetics in their health system. A nice online article in Genomeweb here. See the original article by Vassy et al. here. 4 gene drug pairs were strongly recommended and and additional 12 were recommended, totaling 16.
I believe if you are able to click on the article link from the Genomeweb news article, it will take you to a website that gives you access to read the whole original article online (but not download it.)
On June 27, 2018, I'm chairing a session on genomics and health disparities at the National Academy of Sciences, and we will have Larry Meyer, National Director, Genomic Medicine, V.A., on the panel