From the color of our hair to the way our bodies tolerate medicine, our genes play a critical role in our health, and our ability to fight off or develop illness and disease, including cancer. But the genes in our DNA profile are not the only ones dictating our health. The genetic profile of a tumor is also critically important in determining how the cancer behaves and grows, and oncologists are now using that information to personalize treatments in very targeted ways. In this episode of Focus on Cancer, the second in a two-part series on how genes are used in cancer treatment, Pat Basu, MD, MBA, President & CEO of Cancer Treatment Centers of America® (CTCA), and his guest, Maurie Markman, MD, President of Medicine & Science at CTCA®, discuss how precision medicine has revolutionized cancer care over the past decade or two.