Mathai Mammen has joined the board of directors of 10x Genomics. He is the global head of science and development at the Janssen Pharmaceutical Companies of Johnson & Johnson. Prior to that, he was senior vice president at Merck Research Laboratories, where he led several disease research programs. Before that, he led research and development at Theravance, a company he cofounded. Mammen holds an MD from the Harvard Medical School and Massachusetts Institute of Technology HST program and a PhD in chemistry from Harvard University, as well as a BSc in chemistry and biochemistry from Dalhousie University.