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ALK+ large B-cell lymphoma is a type of lymphoma. [ 1 ] [ 2 ] : 378 It was first reported in 1997. [ 2 ] : 378 [ 3 ] [ 4 ] It is a rare, aggressive large B-cell process that shows ALK expression.
Anaplastic lymphoma kinase (ALK) was originally discovered in 1994 [5] [7] in anaplastic large-cell lymphoma (ALCL) cells. ALCL is caused by a (2;5)(p23:q35) chromosomal translocation that generates the fusion protein NPM-ALK, in which the kinase domain of ALK is fused to the amino-terminal part of the nucleophosmin (NPM) protein.
ALK inhibitors are anti-cancer drugs that act on tumours with variations of anaplastic lymphoma kinase (ALK) such as an EML4-ALK translocation. [1] They fall under the category of tyrosine kinase inhibitors , which work by inhibiting proteins involved in the abnormal growth of tumour cells.
ALK, i.e. anaplastic lymphoma kinase, is a protein product of the ALK gene located on chromosome 2. In ALK-positive ALCL, a portion of the ALK gene has merged with another site on the same or different chromosome to form a chimeric gene consisting of part of the new site and part of the ALK gene coding for ALK's activity. [4]
Crizotinib is indicated for the treatment of metastatic non-small cell lung cancer (NSCLC) or relapsed or refractory, systemic anaplastic large cell lymphoma (ALCL) that is ALK-positive. [ 2 ] [ 3 ] It is also indicated for the treatment of unresectable, recurrent, or refractory inflammatory anaplastic lymphoma kinase (ALK)-positive ...
Acute lymphoblastic leukemia (ALL) is a cancer of the lymphoid line of blood cells characterized by the development of large numbers of immature lymphocytes. [1] Symptoms may include feeling tired, pale skin color, fever, easy bleeding or bruising, enlarged lymph nodes, or bone pain. [1]
ALK+ large B-cell lymphoma (ALK+ LBCL) is a DLBCL in which neoplastic lymphocytes that express the ALK tyrosine kinase receptor protein infiltrate lymph nodes as well as extranodal sites, e.g. the mediastinum, bones, bone marrow, nasopharynx, tongue, stomach, liver, spleen, and skin. About 60% of these individuals present with advanced disease.
ALK positive lung cancer is a primary malignant lung tumor whose cells contain a characteristic abnormal configuration of DNA wherein, most frequently, the echinoderm microtubule-associated protein-like 4 gene is fused to the anaplastic lymphoma kinase (ALK) gene.