Dr. Kellar is the Founder and President of Development Engineering Sciences, LLC, a biomedical consulting firm. He has over 15 years of experience in the development and regulatory approval of medical devices, cell-based products, and tissue engineered technology. Previously, Dr. Kellar was VP of Research and Development at Histogen, Inc. where he led multi-functional project teams for all aspects of product development. Prior to Histogen, Dr. Kellar was a product specialist for the first FDA-approved thoracic endograft at W.L. Gore and Associates where he served a lead role in development, regulatory, clinical trials, marketing, sales, and business for the thoracic device and the product portfolio. Previous to this position, Dr. Kellar was a product specialist for the Global Oral Health Business at W.L. Gore & Associates (both Gore-Tex® Regenerative Membranes and the entire resorbable membrane portfolio). Prior to Gore, at Advanced Tissue Sciences, Inc. he led cardiovascular research programs and managed the Anginera® program. Dr. Kellar previously served on the Scientific Advisory Board for Theregen, currently serves on the Scientific Advisory Board for MyoStim, and is on the Faculty in Biological Sciences and Mechanical Engineering at Northern Arizona University. Dr. Kellar also serves on the Board of Directors for the Surfaces in Biomaterials Foundation and Flagship Biosciences, a digital pathology company. He serves as an Advisory Board Member for Protein Genomics, a protein polymer medical device company. He earned his Ph.D. in Physiological Sciences from the University of Arizona.