TWIST1 and neoplasm: In contrast to Slug and Twist, the expression of E-cadherin was observed in ≥10% of tumor cells in 39/45 (87%) meningiomas (9/10 meningothelial, 10/10 fibrous, 7/10 angiomatous, 10/10 atypical, and 3/5 anaplastic meningiomas), but not in any HPCs or SFTs (P<0.0001) (Fig. 2, Table 1).