An Exploration into the Origins and Pathogenesis of Anaplastic Large Cell Lymphoma, Anaplastic Lymphoma Kinase (ALK)-Positive

An Exploration into the Origins and Pathogenesis of Anaplastic Large Cell Lymphoma, Anaplastic Lymphoma Kinase (ALK)-Positive

T-cell non-Hodgkin lymphoma is a heterogeneous disease ranging from malignancies arising from thymic T cells halted in development, through to mature, circulating peripheral T cells. The latter cases are diagnostically problematic with many entering the category of peripheral T-cell lymphoma, not otherwise specified (PTCL, NOS). Anaplastic large cell lymphoma (ALCL) is one of the exceptions to ...

ALK- negative Anaplastic Large Cell Lymphoma of Bone

Anaplastic Lymphoma Kinase (ALK)

on chromosome 2p23, and codes for a protein that is expressed in some cells of the central nervous system, but in virtually no other normal human cells. Interest in this protein among diagnostic pathologists has been related to its utility in recognizing a subset of CD30+ anaplastic large cell lymphomas (ALCL's), that show a characteristic t(2;5)(p23;q35) translocation. This translocation resul...

ALK (anaplastic lymphoma kinase)

Description 1620 amino acids; 177 kDa; after glycosylation, produces a 200 kDa mature glycoprotein; composed of an extracellular domain, a transmembrane domain, a tyrosine kinase domain, and an intracytoplasmic domain in C-term; dimerization. Expression Is tissue specific; mainly in: brain, gut and testis; not in the lymphocytes. Localisation Cell membrane. Function Membrane associated tyrosine...

CD4 T-helper responses to the anaplastic lymphoma kinase (ALK) protein in patients with ALK-positive anaplastic large-cell lymphoma.

We have previously shown both humoral and CTL responses to anaplastic lymphoma kinase (ALK) in patients with ALK-positive anaplastic large-cell lymphoma (ALCL). However, because CD4(+) T-helper (Th) cells also play a vital role in developing and maintaining tumor immunity, we investigated the presence of a CD4(+) Th response in ALK-positive ALCL. Using an IFN-gamma ELISPOT assay, we identified ...