Gastrointestinal Defects and Immunodeficiency Syndrome 2, is also known as multiple intestinal atresia with or without leukopenia. An important gene associated with Gastrointestinal Defects and Immunodeficiency Syndrome 2 is PI4KA (Phosphatidylinositol 4-Kinase Alpha). Affiliated tissues include pons, and related phenotypes are intellectual disability and dysphagia