1 Elisa Fontana, MD, PhD, Sarah Cannon Research Institute UK, London, United Kingdom; Gastrointestinal Tract Cancer Group, EORTC, Brussels, Belgium; Jeffrey P. Meyers, BA, Department of Quantitative Health Science, Mayo Clinic, Rochester, MN; Thierry André, MD, Sorbonne Université and Hôpital Saint Antoine, Paris, France; Irit Ben-Aharon, MD, Gastrointestinal Tract Cancer Group, EORTC, Brussels, Belgium, Division of Oncology, Rambam Health Care Center, Haifa, Israel; and Qian Shi, PhD, Department of Quantitative Health Science, Mayo Clinic, Rochester, MN.