“…Although it is unlikely that a drug that is suitable only for a few individuals (truly personalised medicine) will be developed, it is now clear that stratified medicine, that is, tailoring a therapy to selected groups of patients based on some prognostic measure of how they will respond, is a major goal today. This requires systems to predict i) how a given patient will metabolise any administered drugs, ii) whether there will be any adverse side effects and iii) whether the drugs will be efficacious [1]. This approach extends beyond drug therapy and is also relevant to surgical and other interventions such as radiotherapy in cancer treatment, to nutritional and nutraceutical studies, or sports training regimes, for example.…”