EPCAM and AIDS dementia complex: Contrary to our study, Pak et al. showed that lymph node metastasis was not association with EpCAM overexpression [25], what’s more, Gold et al. reported that EpCAM overexpression was a significant predictor for favorable overall survival and disease free survival [26], and even Pak et al. indicated that EpCAM overexpression was not correlated with overall survival in ADC and SCC.