NCIt definition : Human PRF1 wild-type allele is located in the vicinity of 10q22 and is approximately
5 kb in length. This allele, which encodes perforin-1 protein, plays a role in lymphocyte-mediated
cytolysis. Mutation of the gene is associated with T-cell lymphoblastic lymphoma,
aplastic anemia, hemophagocytic lymphohistiocytosis familial type 2, autoimmune lymphoproliferative
syndrome and other lymphoproliferative disorders, including various forms of lymphoma.;