In the complex world of pharmaceuticals and healthcare, a drug that works in one patient, may not be effective in another. So imagine a world in which drugs are tailor-made to an individual’s healthcare needs. Advances in our understanding of the genetic basis of disease have allowed such "personalized medicine" to move away from the realm of science fiction and into real-world applications. Companion diagnostics – tests in personalized healthcare – that are conducted once a disease has been diagnosed enable doctors to choose the best possible treatment based on the patient’s personal genetic profile. As the leading provider of companion diagnostics for applications in personalized healthcare worldwide, we enable doctors to combine diagnosis and treatment into one package. Our strategy to work with pharma partners has brought to market companion-diagnostic tests for identification of patients with the best chance of a successful therapy.