The study also confirms that TOX, FYB, LEF1, CCR4, ITK, EED, POU2AF, IL26, STAT5, BLK, GTSF1, and PSORS1C2 are genes being differentially expressed between CTCL and benign skin lesions. The gene discussed is TOX; the disease is primary cutaneous T-cell non-Hodgkin lymphoma.