CD30L, belongs to the tumor necrosis factor (TNF) ligand family. This cytokine is a ligand for TNFRSF8/CD30, which
is a cell surface antigen and a marker for Hodgkin lymphoma and related hematologic malignancies. The
engagement of this cytokine expressed on B cell surface plays an inhibitory role in modulating Ig class switch. This
cytokine was shown to enhance cell proliferation of some lymphoma cell lines, while to induce cell death and reduce
cell proliferation of other lymphoma cell lines. The pleiotropic biologic activities of this cytokine on different CD30+ lymphoma cell lines may play a pathophysiologic role in Hodgkin's and some non-Hodgkin's lymphomas.