Precision Medicine uses advances in genetics to tailor treatment to the individual. Advances in Precision Medicine are already helping to transform the way we can treat cancer. Patients with breast, lung, and colorectal cancers, as well as melanomas and leukemias, for instance, routinely undergo molecular testing as part of patient care, enabling physicians to select treatments that improve chances of survival and reduce exposure to adverse effects. Through the Precision Medicine Initiative, the White House has made accelerating the advances in Precision Medicine a national priority. (https://www.whitehouse.gov/precision-medicine).