ProTAME is an inhibitor of APC/CFzr and APC/CCdc20. Combinations of proTAME with topoisomerase inhibitors, doxorubicin and etoposide, significantly increase cell death in primary cells and MultipleMyeloma (MM) cell lines, particularly if TOPIIα levels are first increased through pre-treatment with ProTAME.This compound is unstable in powder form and other related salt forms are recommended.