Disclosures: V. Bhargava is a full-time employee of Janssen Research and Development LLC. J. Patel and P. Wilkinson are employees of Janssen Research and Development LLC. D. Smirnov reported other from Janssen outside the submitted work and is an employee and shareholder of Janssen. MA Sepulveda is a full-time employee of Johnson & Johnson pharmaceuticals in Discovery Oncology. They collaborated with Dr. Gabrilovich and his team in the work included in this publication. R. Cristescu reported other from Merck during the conduct of the study and other from Merck outside the submitted work. A. Loboda is a full-time employee of Merck & Co. DI Gabrilovich reported other from AstraZeneca outside the submitted work and is a current employee of AstraZeneca. No other disclosures were reported.