SNAI1 and ductal breast carcinoma in situ: In DCIS, N-cadherin, Snail, Twist, Vimentin, and Zeb1 were expressed in 5.7% (5/88), 3.4% (3/88), 2.3% (2/88), 2.3% (2/88), and 3.4% (3/88).