The resolution of phenotypic ambiguity in a case of human leukemia using cytogenetics and immunoglobulin gene rearrangement.
A 28-year-old woman presented with acute leukemia. Surface antigen analysis showed monoclonal kappa immunoglobulin distribution. Morphology was consistent with either acute lymphoblastic leukemia or acute promyelocytic leukemia, hypogranular variant. This dilemma was resolved by examining the leukemic blasts for immunoglobulin gene rearrangement. None were found, ruling-out involvement of the B-cell lineage in this malignancy. Cytogenetic analysis showed a clonal abnormality diagnostic of acute promyelocytic leukemia. Immunoglobulin gene rearrangement in cytogenetics are invaluable in the care of patients with acute leukemia and can resolve ambiguities that result from phenotypic analysis.
D000328:Adult; D000911:Antibodies, Monoclonal; D001402:B-Lymphocytes / Q000276:immunology; D004262:DNA Restriction Enzymes; D005260:Female; D006801:Humans; D007145:Immunoglobulin kappa-Chains / Q000235:genetics*; D007945:Leukemia, Lymphoid / Q000235:genetics* / Q000276:immunology; D015470:Leukemia, Myeloid, Acute / Q000235:genetics* / Q000276:immunology; D010641:Phenotype
D000911:Antibodies, Monoclonal; D007145:Immunoglobulin kappa-Chains; D004262:DNA Restriction Enzymes