Anna Barker is co-director of the Complex Adaptive Systems Initiative and Professor at Arizona University (ASU), where she employs complex systems models to create transformative knowledge networks that address trans-sector problems in biomedicine. She is also director of the recently launched National Biomarker Development Alliance. Prior to ASU, she served as the deputy director of the National Cancer Institute (NCI), leading strategic programs such as The Cancer Genome Atlas, Nanotechnology Alliance for Cancer, and the Physical Sciences-Oncology Centers. Prior to NCI, she was a senior executive at Battelle Memorial Institute and subsequently co-founder and CEO of a public biotechnology company. She completed her master of arts and doctoral degrees at the Ohio State University.