John R. Desjarlais PhD

Dr. Desjarlais is the Senior Vice President, Research and CSO at Xencor, Inc. Since joining Xencor in 2001, Dr. Desjarlais has overseen the company’s engineering, discovery, and preclinical work on antibodies and other proteins. With his coworkers, Dr. Desjarlais has developed several novel technologies for the optimization of antibodies and other proteins, including a platform for the generation of bispecific antibodies, and has led the discovery of multiple therapeutic antibody candidates, including CD3 bispecific antibodies, checkpoint bispecific antibodies, and cytokine-Fc fusions for treatment of a variety of diseases.

Dr. Desjarlais oversees all of Xencor’s discovery research and preclinical activities, from project conception and candidate generation through preclinical proof-of-concept and early development. Prior to Xencor, Dr. Desjarlais was an Assistant Professor of Chemistry at Penn State University (1997-2001), where he developed and tested methods for the de novo design of protein sequences. He began his work in the field of protein design as a Jane Coffin Childs Fellow at UC Berkeley. Dr. Desjarlais holds a Ph.D. in Biophysics from Johns Hopkins University and a BS degree in Physics from the University of Massachusetts, Amherst.