To address whether muscle inflammation is associated with HL, we moreover performed CD30 staining studies also utilizing muscle biopsy specimens derived from juvenile dermatomyositis (jDM, n = 2), immune-mediated necrotizing myositis (IMNM, n = 1) and Duchenne muscular dystrophy (DMD, n = 1) patients serving as disease controls—all of them non-paraneoplastic. The gene discussed is TNFRSF8; the disease is juvenile dermatomyositis.