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TCGA analysis of differences about HER2 gene expression between cancer and normal tissues (A), stage III and IV (B), male and female (C), N0 and N1&2 tumor (D), LVI and no-LVI (E) and subtypes (F). Survival conditions were also compared: overall survival (G), disease specific survival (H) and progress free interval (I). ERBB2: HER2, Human Epidermal Growth Factor Receptor 2; LVI, lymph vascular invasion; HR, hazard ratio.
