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Mr. McKenna serves as President, CEO and member of the board of Prometheus Biosciences. Prior to joining Prometheus Biosciences, Mr. McKenna was President & CEO of Salix Pharmaceuticals, a wholly owned subsidiary of Bausch Health Companies. He joined Salix in March 2016 as the Senior Vice President and General Manager, responsible for the company’s gastrointestinal franchise. During his tenure, Mr. McKenna successfully led the company through a series of key strategic acquisitions, the launch of a number of new products, and delivered strong operating performance, with revenue increasing from $1.2B to $2B. Prior to joining Salix, Mr. McKenna spent more than a decade with Bausch + Lomb, most recently as Senior Vice President/General Manager of its U.S. Vision Care business. Prior to Bausch + Lomb, Mark held several roles of increasing responsibility at Johnson & Johnson. Mark holds a B.S. in Marketing from Arizona State University, an MBA from Azusa Pacific University and is a Fellow with the University of Pennsylvania, Wharton School of Business.