title: Chromosomes and causation of human cancer and leukemia. LII. Chromosome findings in treated patients with B-cell chronic lymphocytic leukemia.
abstract: The chromosomes of stimulated lymphocytes in 40 treated cases of B-cell chronic lymphocytic leukemia (B-CLL) were examined. The polyclonal B-cell activators (PBA) used were: pokeweed mitogen (PWM), Epstein-Barr virus (EBV), and lipopolysaccharide W from Escherichia coli 055:B5 (LPS). Thirty-three (83%) of the 40 cases contained an adequate number of metaphases that were suitable for banding. Of 15 cases with abnormal clones, 7 cases had trisomy #12. Occasionally, trisomy #1, 6q-, i(7q), 14q+, trisomy #16, and trisomy #18 were seen. In 5 cases, marker chromosomes of unknown origin existed. The findings indicate that trisomy #12 may be a unique and nonrandom karyotypic change in B-CLL.
mesh_terms: D000368:Aged; D001402:B-Lymphocytes; D002871:Chromosome Banding; D002900:Chromosomes, Human, 1-3; D002902:Chromosomes, Human, 16-18; D002906:Chromosomes, Human, 6-12 and X; D004926:Escherichia coli; D005260:Female; D004854:Herpesvirus 4, Human; D006801:Humans; D007621:Karyotyping; D007945:Leukemia, Lymphoid / Q000235:genetics*; D008070:Lipopolysaccharides / Q000494:pharmacology; D008297:Male; D008875:Middle Aged; D011043:Pokeweed Mitogens / Q000494:pharmacology; D014314:Trisomy
chemical_list: D008070:Lipopolysaccharides; D011043:Pokeweed Mitogens