Keywords: BV, brentuximab vedotin; FGF, fibroblast growth factor; IL, interleukin; MF, mycosis fungoides; Scl-70, DNA topoisomerase I; TGF-β, transforming growth factor β; Th2, helper T cell 2; cutaneous T cell lymphoma; immunotherapy; mycosis fungoides; paraneoplastic; scleroderma.