CD19-specific adapter molecule SWI019

A preparation of adapter molecules consisting of an antibody fragment (Fab) targeting CD19 linked to a 14 aa peptide epitope, or peptide neo-epitope (PNE), recognizable by CLBR001, that may be used to activate CLBR001. Upon administration of CD19-specific adapter molecule SWI019, and upon co-administration of CLBR001, the Fab moiety of SWI019 targets and binds to tumor cells expressing CD19, and the PNE of SWI019 binds to the binding domain of CLBR001, thereby activating CLBR001. This induces selective toxicity in and causes lysis of CD19-expressing tumor cells. CD19 antigen is a B-cell specific cell surface antigen expressed in all B-cell lineage malignancies.