Oncology Central

Progress in the identification of subgroups in ALK-negative anaplastic large-cell lymphoma

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Classification of anaplastic large cell lymphoma: historical background

Anaplastic large cell lymphoma (ALCL) represents a group of non-Hodgkin lymphomas of mature T-cell origin (peripheral T-cell lymphomas [PTCLs]) that share common pathologic features, especially the presence of large lymphocytes that often involve lymph node sinuses and express the Ki-1 antigen, now designated CD30 [1]. A chromosomal rearrangement in a subset of these cases, t(2;5)(p23;q35), was found to involve the nucleophosmin gene, NPM1, and a novel tyrosine kinase gene, designated anaplastic lymphoma kinase or ALK [2].

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