title: Cytogenetic patterns in acute nonlymphocytic leukemia.
abstract: Analysis of chromosomal banding patterns in acute nonlymphocytic leukemia (ANLL) reveals that approximately 50% of patients have an abnormal karyotype. Although there is substantial variability, certain nonrandom abnormalities occur, e.g., +8, -7, and the 8;21 translocation (often accompanied by loss of an X or Y chromosome). The 15;17 translocation appears to be highly specific for acute promyelocytic leukemia. These abnormalities usually are not seen in remission, but reappear in relapse, sometimes exhibiting further clonal evolution; a +8 is the most frequently observed evolutionary change. Patients with ANLL following treatment of a malignant lymphoma tend to have hypodiploid modal numbers and frequently show loss of a chromosome No. 5 or No. 7.
mesh_terms: D000208:Acute Disease; D001853:Bone Marrow / Q000473:pathology; D002869:Chromosome Aberrations / Q000150:complications*; D002871:Chromosome Banding; D025063:Chromosome Disorders; D002901:Chromosomes, Human, 13-15; D002902:Chromosomes, Human, 16-18; D002904:Chromosomes, Human, 21-22 and Y; D002906:Chromosomes, Human, 6-12 and X; D006801:Humans; D007938:Leukemia / Q000150:complications / Q000473:pathology*; D012075:Remission, Spontaneous; D014178:Translocation, Genetic