title: Philadelphia chromosome in human multiple myeloma.
abstract: Four patients with multiple myeloma in whom a Ph1 chromosome was found were described; 1 patient had a (9;22) translocation, 2 had no evidence of a translocation, and 1 had a complex translocation (3;8;22). Ph1 chromosomes with standard (9;22) or with unusual translocations were recently found in various myeloproliferative disorders (other than chronic myelogenous leukemia) and in acute lymphoblastic leukemia. These findings point to the genesis of a Ph1 chromosome in diseases other than chronic myelogenous leukemia and other myeloproliferative disorders.
mesh_terms: D000368:Aged; D002904:Chromosomes, Human, 21-22 and Y; D005260:Female; D006801:Humans; D007621:Karyotyping; D008297:Male; D008875:Middle Aged; D009101:Multiple Myeloma / Q000097:blood* / Q000235:genetics*; D010198:Pancytopenia / Q000150:complications; D014178:Translocation, Genetic