CD2 is a cell surface-associated protein expressed in both mature and immature T cells, as well as natural killer (NK) cells. CD2 is aberrantly decreased in a subset of T cell and natural killer cell neoplasms. Rare cases of acute myeloid leukemia show aberrant coexpression of CD2 on the leukemic blasts.
Subcellular Localization: Membranous
Disease State: Anaplastic Large Cell Lymphoma (Systemic or Cutaneous), Angioimmunoblastic T Cell Lymphoma, Mastocytosis, NK/T Cell Lymphoma, Nasal Type, Peripheral T Cell Lymphoma, NOS (of Large Cell Type)
CPT Code(s): 88342 or 88341 (reference only; CPTs may vary)
Turnaround Time: Within 1-2 business days of receipt
Schedule: Monday - Friday
• Formalin-fixed, paraffin-embedded (FFPE) tissue block or cell block - OR -
• 1 unstained slide for each test requested plus 3-4 additional unstained slides cut at 4µm