Lymphomas expressing ALK fusion protein(s) other than NPM-ALK.

Abstract excerpt

The tumor cells in ALK-positive lymphoma ("ALKoma") usually express the product of the NPM-ALK chimeric gene, generated by the t(2;5) chromosomal translocation. However, 10% to 20% of ALK-positive lymphomas express ALK fusion protein(s) other than NPM-ALK, and in this report, we describe the immunohistologic and clinicopathologic features of 15 such cases. The absence of the NPM-ALK fusion gene was confirmed by...

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