Corresponding mProtein expression was assessed using fluorescence‐labeled DLL3 antibody in DLL3/epithelial cell adhesion molecule (EpCAM)/receptor tyrosine kinase‐like orphan receptor 1 (ROR1)+ tumor‐associated EVs (tEV), captured with a mixture of DLL3, EpCAM, and ROR1 monoclonal antibodies. This evidence concerns the gene ROR1 and neoplasm.