In gastric cancer HER-2, EGFR, Akt, HIF-1α and other proteins—all linked to HSP90—appear to be potential targets (Iacopetta et al. 1999; Scartozzi et al. 2004; Gravalos and Jimeno 2008; Nobili et al. 2011). This evidence concerns the gene ERBB2 and gastric cancer.