title: Prospective gene rearrangement studies and multiparameter analysis of acute myeloid leukemia.
abstract: Twenty-six cases of acute myeloid leukemia (AML) with cytochemical and immunophenotypic data were studied prospectively for immunoglobulin and T-cell receptor gene rearrangement. Dysmyelopoiesis was seen in 100% and Auer rods in 18%. Sudan black B was positive in 83% of the cases, peroxidase in 76%, nonspecific esterase in 74% (fluoride-inhibited in 82%), chloroacetate in 70%, acid phosphatase and PAS in 100%, and immunoperoxidase stains for platelet glycoprotein IIIa and factor VIII in 0% of the cases studied. Flow cytometry revealed myeloid phenotype in 19 of 20 cases. In four cases 5-86% of cells were TdT positive. Heavy-chain gene rearrangement was demonstrated in three cases (12%) and kappa light chain gene rearrangement in one; clinically significant rearrangement of the T-cell receptor gene was not found. Rearrangements of immunoglobulin genes are found occasionally in AML; these may represent nonspecific findings or coexistent lymphoid differentiation in AML.
authors.affiliation: Institute of Pathology, Case Western Reserve University, Cleveland, Ohio.
authors.forename: D C
authors.initials: DC
authors.lastname: Farhi
authors.forename: C N
authors.initials: CN
authors.lastname: Luckey
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D015139:Blotting, Southern; D002648:Child; D002675:Child, Preschool; D005169:Factor VIII / Q000378:metabolism; D005260:Female; D005434:Flow Cytometry; D015321:Gene Rearrangement / Q000235:genetics*; D015329:Gene Rearrangement, T-Lymphocyte / Q000235:genetics; D006801:Humans; D007143:Immunoglobulin Heavy Chains / Q000235:genetics; D007147:Immunoglobulin Light Chains / Q000235:genetics; D007150:Immunohistochemistry; D016130:Immunophenotyping; D015470:Leukemia, Myeloid, Acute / Q000175:diagnosis / Q000235:genetics* / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D010980:Platelet Membrane Glycoproteins / Q000378:metabolism; D011446:Prospective Studies; D011948:Receptors, Antigen, T-Cell / Q000235:genetics
chemical_list: D007143:Immunoglobulin Heavy Chains; D007147:Immunoglobulin Light Chains; D010980:Platelet Membrane Glycoproteins; D011948:Receptors, Antigen, T-Cell; D005169:Factor VIII