TNFRSF8 and primary cutaneous T-cell non-Hodgkin lymphoma: (2) CD30 expression, categorized as a cytokine receptor within the tumor necrosis factor receptor superfamily, is present in a specific subset of CTCL known as CD30-positive primary CTCL (PC CD30+ T-LPD) [15,16,17,18,19,20,21,22].