Overall, the percent of endometrial tumor tissue with observed MUC1 expression was 29.5% (± 3.7% SEM), EGFR expression was 40.2% (± 3.9% SEM) and MUC1/EGFR co-expression was 14.3% (± 2.2% SEM). The gene discussed is MUC1; the disease is endometrium neoplasm.