Mouse Decoy Tumor Necrosis Factor-Related Apoptosis-Inducing Ligand (TRAIL) Receptor 2 (mDcTRAIL-R2) is highly homologous to mDcTRAIL R1. It is a GPI-anchored mouse TNF receptor super-family member that lacks a cytoplasmic death domain. It is expressed on many cell types, including some tumor cells. It was reported that overexpression of mDcTRAIL-R2 did not induce caspase activation that is characteristic of death receptor signaling. mDcTRAIL-R2 appears to have a negative effect against TRAIL receptors because it lacks an intracellular death domain, and produces a competitive blockage of TRAIL-mediated apoptosis. The role of the DcTRAIL-R2 in apoptosis has not yet been completely clarified.