The aim of this study is to establishing an accurate blood diagnosis for early suspected MF by demonstrating that newly identified biomarkers or their combination [5 cutaneous KIR receptor markers (KIR2DS1, KIR2DS3, KIR3DL1, KIR2DL4, KIR3DL2) and 5 blood biomarkers (TOX, Twist-1, PLS3/T-plastin, KIR3DL2, NKp46)] are differentially expressed by patients with MF and patients with inflammatory dermatoses closely resembling MF lesions.