S1412 Human Immunogenetics of Gastrointestinal Malignancies: A Systematic Review of Cases With Primary Immune Deficiencies. (October 2021) - Zheng, Beishi; Chen, Bing; Chung, Howard; Sun, Siming; Ciccone, Lyam; Deane, Kitson; Green, Peter; Lebwohl, Benjamin; Rustgi, Anil; Wang, Timothy; Kong, Xiaofei