title: Cytogenetic studies of acute promyelocytic leukemia.
abstract: Translocation t(15;17) is reported in bone marrow cells from six of seven patients with active acute promyelocytic leukemia (APL). One patient who showed t(15;17) at final relapse did not show it in directly prepared or cultured cells taken from a previous relapse. Bone marrow samples from two patients showed only cells with a normal karyotype in the direct preparation, whereas more than 60% of cells cultured for 24 hr showed t(15;17). R-Banding, G-banding, and an attempt at high-resolution banding indicated the break points t(15;17)(q24;21) for one of our patients.
mesh_terms: D000328:Adult; D000368:Aged; D001853:Bone Marrow / Q000473:pathology; D002648:Child; D002871:Chromosome Banding; D002901:Chromosomes, Human, 13-15; D002902:Chromosomes, Human, 16-18; D005260:Female; D006801:Humans; D007621:Karyotyping; D015470:Leukemia, Myeloid, Acute / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D014178:Translocation, Genetic