title: Possible specific chromosome change in prolymphocytic leukemia.
abstract: The chromosomes of unstimulated and stimulated blood lymphocytes from 5 cases with B-cell prolymphocytic leukemia (PLL) were examined following the use of polyclonal B-cell activators (PBA). Banding techniques revealed a common and specific chromosome abnormality to be present in each of the cases, which was due to a translocation between chromosomes 6 and 12 (t(6;12)(q15;p13]. The fact that this specific chromosome change has not been reported in other lymphoproliferative disorders may indicate that PLL is a distinct clinical entity and different from other lymphoproliferative disorders, whether it occurs de novo or complicates chronic lymphocytic leukemia (CLL).
mesh_terms: D000368:Aged; D002869:Chromosome Aberrations; D002900:Chromosomes, Human, 1-3; D002902:Chromosomes, Human, 16-18; D002903:Chromosomes, Human, 19-20; D002904:Chromosomes, Human, 21-22 and Y; D002906:Chromosomes, Human, 6-12 and X; D005260:Female; D006801:Humans; D007621:Karyotyping; D007945:Leukemia, Lymphoid / Q000235:genetics*; D008297:Male; D012730:Sex Chromosomes