Life has a lot of unknowns, and one of the big unknowns for 2019 is what the FDA will look like now that Scott Gottlieb has returned to the American Enterprise Institute. Norm Sharpless of the National Cancer Institute has been named the acting FDA commissioner – which by itself doesn’t mean a whole lot, other than that he has to be considered a lead candidate for the job – but the difficulty in knowing where the agency would go in terms of policy under...