1 Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center; Houston, Texas, USA; Oncology Unit 1, Veneto Institute of Oncology-IRCCS, Padova, Italy; Department of Surgery, Oncology and Gastroenterology, University of Padua, Padova, Italy.
2 Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center; Houston, Texas, USA.
3 Natera, Inc., Austin, TX.
4 Department of Investigational Cancer Therapeutics, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA; Khalifa Institute for Personalized Cancer Therapy; The University of Texas MD Anderson Cancer Center, Houston, Texas; The Institute for Applied Cancer Science, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.
5 Department of Surgery, The University of Texas MD Anderson Cancer Center; Houston, Texas, USA.
6 Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center; Houston, Texas, USA. Electronic address: jshen8@mdanderson.org.