As for CTCL, the most common subtypes are mycosis fungoides (MF), Sézary syndrome (SS), and CD30-positive lymphoproliferative disorders, which include primary cutaneous anaplastic large cell lymphoma (pcALCL) and lymphomatoid papulosis (LyP) [4]. This evidence concerns the gene TNFRSF8 and primary cutaneous T-cell non-Hodgkin lymphoma.