With President Obama's support, precision medicine is gaining ground. A new $215 million initiative plans to study a million patients nationwide to advance understanding of how to target specific treatments to specific individuals based on their type of disease, lifestyle, environment, and DNA. But there are questions about who will benefit and who may be left out. People of color have historically been left out of clinical research. So can precision medicine bring them into the fold? For some diseases, like asthma, it may be critical to do so. This is a story I reported for The Pulse at WHYY in Philadelphia.