PTK2 and adenocarcinoma: Indeed, a detailed genomic analysis of chromosome 8q has been performed on gastroesophageal junction (GEJ) adenocarcinomas and this study revealed other genes (ANXA13MTSS1FAM84BC8orf17, and PTK2) except MYC involved in the 8q amplification and the pathology of GEJ adenocarcinomas [19].