The TLR2, TLR4, and TLR9 expression on keratinocytes express in inflamed skin of patients with CTCL, including both Mycosis fungoides (MF) and Sezary syndrome (SS, an aggressive form of CTCL) (Jarrousse et al., 2006[78]). The gene discussed is TLR4; the disease is primary cutaneous T-cell non-Hodgkin lymphoma.