articles like this about medications prescribed based on Genetic makeup will become a flood in the next 2-3 years. the diagnostics market for this will be huge. Ironically the drugs companies lose and gain from this. One the one hand they lose patients who aren't suited to a drug. On the plus side they gain hopefully from fewer side effects, increased efficacy and hopefully even tailored dosages.
The genetic diagnostics market could well become the tail that wags the world's multi-billion dollar pharma dog.