Gastroesophageal Junction Adenocarcinoma, also known as adenocarcinoma of the gastroesophageal junction, is related to esophagus adenocarcinoma and microinvasive gastric cancer, and has symptoms including abdominal pain An important gene associated with Gastroesophageal Junction Adenocarcinoma is ERBB2 (Erb-B2 Receptor Tyrosine Kinase 2), and among its related pathways/superpathways are ERK Signaling and Apoptotic Pathways in Synovial Fibroblasts. The drugs Rivoceranib and Cetuximab have been mentioned in the context of this disorder. Affiliated tissues include lymph node and breast, and related phenotypes are Increased shRNA abundance (Z-score > 2) and Increased cell migration