Bioethics expert R. Alta Charo is joining the U.S. Food and Drug Administration as a senior adviser to FDA Commissioner Margaret Hamburg. In an interview Wednesday, Hamburg said that Charo will be involved in many cutting-edge fields. “I expect that we will quickly make use of her as we think about strategies on how to address the review of products in the arena of personalized medicine, in-vitro diagnostics, stem-cell therapies, where she’s already done important work,” Hamburg said.