Second, despite large sample studies in public databases prone to possess the superiority of strong evidence, public databases remain to lack some clinical information on PTC tissue around the prognostic tumor status of radioiodine uptake, angiogenesis, proliferation, drug resistance, and serum thyroglobulin levels; Therefore, we cannot perform a clinically based analysis comparing those prognostic factors above, and directly investigating their relations with ERBB2 expression. Here, ERBB2 is linked to neoplasm.