Hyperthyroidism was not correlated with gender (p = 0.134), age (p = 0.328), tumor location (p = 0.691), histology (p = 0.484), second cancer (p = 0.051), nicotine (p = 0.100), alcohol (p = 0.878), number of metastatic sites (p = 0.160), metastatic sites (lymph nodes, p = 1.000; peritoneal, p = 0.094; bone, p = 0.392; Krukenberg, p = 1.000; renal, p = 1.000; brain, 0.216; muscle, 1.000; pancreatic, 1.000), or Her2 (p = 0.695). Here, ERBB2 is linked to hyperthyroidism.