Francis Collins, director of the U.S. NIH, said in a public forum that his agency is "really bullish" about precision medicine. Precision medicine requires mounds of data to be viable; however, the necessary data may soon be available. Collins said the NIH's All of Us research program has drawn the interest of more than 300,000 willing participants to date, adding that the target enrollment of 1 million should be accomplished before the end of 2022.