CDH1 and neoplasm: Interestingly, the EVs from HPV-positive cell lines UM-SCC-47, UM-SCC-104, and UPCI:SCC152 (those generated from non-responsive tumors) had lower levels of E-cadherin detected than EVs from HPV-negative UM-SCC-17, or UM-SCC-92, or EVs from HPV18-positive UM-SCC-105 (generated from a responsive tumor).