2 Park Park Dl Dl HER2/neu amplification is an independent prognostic factor in gastric cancer HER2/neu amplification is an independent prognostic factor in gastric cancer Dig Dis Sci Dig Dis Sci 2006 2006 51 51 1371 1371 9 9 16868827 16868827. The gene discussed is ERBB2; the disease is gastric cancer.