TSPYL2 and primary cutaneous T-cell non-Hodgkin lymphoma: Eichmuller et al. [51] found a new gene, named as se20-4 (accession numbers: AF273046), in the serum and tissues of patients with cutaneous T-cell lymphoma (CTCL) when using SEREX (serological identification of recombinantly expressed genes) method to identify cutaneous T lymphoma-specific antigens.