title: Immunophenotype-karyotype associations in human acute lymphoblastic leukemia.
abstract: The present study is a detailed analysis of the cytogenetic features of leukemic cells from 104 immunologically classified acute lymphoblastic leukemia (ALL) (78 B lineage and 26 T lineage) cases. Clonal chromosomal abnormalities were found in marrow blasts from 77 of 104 (74%) cases. Hyperdiploidy was much more frequent in B-lineage ALL cases, whereas normal diploidy was more common in T-lineage ALL cases. Fifty-nine of 104 cases (46 of 78 B-lineage ALL and 13 of 26 T-lineage ALL cases) had structural chromosomal abnormalities. Structural abnormalities involving 2p11, 7p13, 7p22, proximal q arm of 7 (7q11 or 7q22), 11q23-24, and translocations involving 12p11-13 appeared to be B-lineage specific. By comparison, structural abnormalities involving 7p15, 7q32, and 14q11 displayed T-lineage specificity. Structural abnormalities involving 9p22-p23 or 14q32, del (6)(q21-q23), del (12)(p11-p13), and the Philadelphia chromosome were found in B-lineage as well as T-lineage ALL cases. This study expands the current knowledge about immunophenotype-karyotype associations in ALL.
authors.affiliation: Department of Therapeutic Radiology-Radiation Oncology, University of Minnesota Health Sciences Center, Minneapolis.
authors.forename: F M
authors.initials: FM
authors.lastname: Uckun
authors.forename: K J
authors.initials: KJ
authors.lastname: Gajl-Peczalska
authors.forename: A J
authors.initials: AJ
authors.lastname: Provisor
authors.forename: N A
authors.initials: NA
authors.lastname: Heerema
mesh_terms: D000293:Adolescent; D000943:Antigens, Differentiation / Q000032:analysis; D014408:Biomarkers, Tumor / Q000032:analysis; D002051:Burkitt Lymphoma / Q000145:classification / Q000235:genetics* / Q000276:immunology; D002869:Chromosome Aberrations / Q000145:classification / Q000235:genetics; D025063:Chromosome Disorders; D002999:Clone Cells / Q000473:pathology; D015321:Gene Rearrangement; D006801:Humans; D007621:Karyotyping; D015459:Leukemia-Lymphoma, Adult T-Cell / Q000145:classification / Q000235:genetics* / Q000276:immunology; D010641:Phenotype; D014178:Translocation, Genetic
chemical_list: D000943:Antigens, Differentiation; D014408:Biomarkers, Tumor