Ready-to-use ELISA kits are available for the detection of 2PP2A, an alias of the protein, SET nuclear proto-oncogene. The official gene symbol is SET. The protein, with a mass of 33.5 kDa and length of 290 residues, is reported to be cytoplasmic and nuclear. It is a member of the Nucleosome assembly protein (NAP) family and may be known by other names, including: inhibitor of granzyme A-activated DNase, chromatin remodelling factor, SET translocation (myeloid leukemia-associated), SET nuclear oncogene, HLA-DR-associated protein II, and protein SET, and phosphatase 2A inhibitor I2PP2A.