title: Involvement of chromosome 9 in variant Ph1 translocation.
abstract: Cytogenetic analysis of a patient with chronic myelocytic leukemia revealed a translocation (21; 22) (q 22; q 11) without a detectable involvement of chromosome 9. By in-situ hybridization studies, however, we demonstrate a reciprocal translocation of sequences from chromosome 9 (c-abl) to Ph1 and chromosome 22 (bcr) to 9, respectively. These observations suggest a consistent participation of chromosome 9 in the Ph1 translocation, regardless of the cytogenetic subtype.
mesh_terms: D002906:Chromosomes, Human, 6-12 and X; D006801:Humans; D007621:Karyotyping; D007951:Leukemia, Myeloid / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D009693:Nucleic Acid Hybridization; D010677:Philadelphia Chromosome; D014178:Translocation, Genetic