title: Genotype study of non-Hodgkin's lymphoma.
abstract: DNA from 47 patients with non-Hodgkin's lymphoma (NHL) was studied for immunoglobulin and T-cell receptor (TCR) gene rearrangements with Southern blot hybridization. In 83% of the cases the genotypic changes were consistent with immunophenotypic and morphologic examination. Two cases showed mixed genotype and 9 cases of B-cell NHL (67% of centroblastic, 36% of follicular and 33% of large cell anaplastic) showed a population of cells with TCR gamma rearrangements in addition to immunoglobulin rearranged bands. We compared the TCR gamma variable region usage in these rearrangements in B-cell NHL with T-cell NHL and reactive hyperplasia. In T-cell NHL TCR gamma variable regions located at the 3' part of the variable locus were used more often, whilst in B-cell NHL regions of the 5' portion of the locus were preferentially used. Our results confirm the genotypic heterogeneity of histologically defined subtypes of NHL.
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015342:DNA Probes; D004262:DNA Restriction Enzymes; D005260:Female; D015322:Gene Rearrangement, B-Lymphocyte / Q000235:genetics; D015329:Gene Rearrangement, T-Lymphocyte; D005838:Genotype; D006801:Humans; D016393:Lymphoma, B-Cell / Q000235:genetics*; D008228:Lymphoma, Non-Hodgkin / Q000235:genetics*; D016399:Lymphoma, T-Cell / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D016693:Receptors, Antigen, T-Cell, alpha-beta / Q000235:genetics; D016692:Receptors, Antigen, T-Cell, gamma-delta / Q000032:analysis
chemical_list: D015342:DNA Probes; D016693:Receptors, Antigen, T-Cell, alpha-beta; D016692:Receptors, Antigen, T-Cell, gamma-delta; D004262:DNA Restriction Enzymes