As an example, patient CGST33, who presented with intestinal subtype gastric adenocarcinoma at diagnosis, had mutant allele fraction concentrations of 2.32% and 0.64% for TP53 Q192* and ERBB2 R756Cfs*2, respectively, that were completely eliminated at the preoperative timepoint. Here, ERBB2 is linked to gastric adenocarcinoma.