She developed right inguinal lymphadenopathy, and further core needle aspiration revealed a B cell lymphoma with the following immunohistochemistry (IHC) results: CD20+ (3+), CD30-, Bcl-2+ (3+), Bcl-6+ (3+), Ki-67+ (40%+), and MUM1-. The gene discussed is TNFRSF8; the disease is B-cell non-Hodgkin lymphoma.