CD30 expression has also been reported in other non-lymphoid tissues and cells such as soft tissue tumours [23], decidual cells [24,25], lipoblasts [26], myoepithelial cells [27], reactive and neoplastic vascular lesions [28], mesotheliomas [29], cultivated macrophages, and two histiocytic malignancies [30]. Here, TNFRSF8 is linked to mesothelioma.