All of the 21 ductal adenocarcinoma cases were positive for MYH9 cytoplasmic expression with low (n = 9, 42.8%), moderate (n = 10, 47.6%), and high (n = 2, 9.5%) intensities (Fig. 5C and 5D). The gene discussed is MYH9; the disease is invasive ductal breast carcinoma.