CD30

CD30, encoded by the TNFRSF8 gene, is a type I transmembrane receptor of the tumor necrosis factor receptor superfamily expressed transiently on activated T and B lymphocytes. Its defining feature is an elongated extracellular region of cysteine-rich repeats that binds CD30L (CD153), leading to TRAF-mediated NF-κB activation with context-dependent proliferative or apoptotic outcomes. CD30 is the hallmark of classical Hodgkin lymphoma and anaplastic large cell lymphoma and is otherwise nearly absent from resting tissues, a selectivity exploited by the antibody-drug conjugate brentuximab vedotin and by CD30-directed CAR T-cell constructs. Soluble CD30 serves as a disease-monitoring biomarker.