Background of the antigen
NSP type 5 alpha 3 alpha is a novel structure protein belonging to the cytospin-A family, that may play a role in nuclear function during cell division. It is also highly expressed in certain tumor cell lines, suggesting that it may serve as a good tumor marker. It was was cloned as part of a chromosomal translocation involving PDGFRB in a case of juvenile myelomonocytic leukemia.