TNFSF4 and breast cancer: The prognostic role of B7-H2 is not known in breast cancer and our result show that it may have positive prognostic role in curatively resected breast cancer patients.30 As previously noted, OX40 and OX40L is expressed on activated T cells.22 Expression of OX40 and OX40L may have a positive prognostic role as these may reflect presence of an activated T cells.