Frequent somatic mutations in D and/or JH segments of Ig gene in Waldenstrom's macroglobulinemia and chronic lymphocytic leukemia (CLL) with Richter's syndrome but not in common CLL

Abstract excerpt

V(D)J recombination and somatic hypermutations are developmentally regulated during B-cell differentiation; therefore, DNA analysis of the Ig gene delineates the cellular origin of B-cell neoplasms. We analyzed the third complementarity-determining region and adjacent regions of the Ig heavy-chain gene of tumor cells from 7 patients with Waldenström's macroglobulinemia (WM) and from 10 patients with B-cell...

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