Mr. Littlefield joins Prometheus Biosciences from Exagen Inc., where he served as Senior Vice President, Information Services. At Exagen, he established the IS function and led development and implementation of the information systems that enabled the company’s rapid growth. Prior to Exagen, Brian was with Prometheus Laboratories Inc. for sixteen years, having joined soon after its formation. During that time, he led the development and implementation of specialized systems to support proprietary diagnostic testing services and promotion of specialty therapeutics. Prior to that, Brian worked as a consultant with Deloitte and as the Director of Support Services at Quidel Corporation, a diagnostics manufacturer. Brian holds a B.S. in Biochemistry from Purdue University and an M.B.A. from Pepperdine University.