title: [Double t (3; 21) in acute myelomonocytic leukemia transformed from chronic myelomonocytic leukemia].
abstract: A 63-year-old male was diagnosed as chronic myelomonocytic leukemia with normal karyotype in September 1998. He developed acute myelogenous leukemia (AML-M4Eo) in September 2001. The cytogenetic analysis disclosed double t(3;21) at a ratio of 1/20, and the reverse transcriptase-polymerase chain reaction showed AML1/EVI-1 mRNA. He could not achieve complete remission after two courses of induction chemotherapy, and his leukemia cells carrying double t(3;21) were relatively increased. He died of interstitial pneumonia in December 2001. This is the first leukemia case with double t(3;21) and this chromosomal abnormality might play a role in leukemia cell proliferation by generating two AML1/EVI-1 genes.
authors.affiliation: Department of Hematology, Dokkyo University School of Medicine.
authors.forename: Yukihiro
authors.initials: Y
authors.lastname: Arai
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Handa
authors.forename: Fumihiko
authors.initials: F
authors.lastname: Nakamura
authors.forename: Wataru
authors.initials: W
authors.lastname: Takahashi
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Maki
authors.forename: Kinuko
authors.initials: K
authors.lastname: Mitani
mesh_terms: D002891:Chromosomes, Human, Pair 21 / Q000235:genetics*; D002893:Chromosomes, Human, Pair 3 / Q000235:genetics*; D017809:Fatal Outcome; D006801:Humans; D007621:Karyotyping; D015479:Leukemia, Myelomonocytic, Acute / Q000235:genetics* / Q000473:pathology; D015477:Leukemia, Myelomonocytic, Chronic / Q000235:genetics / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D014178:Translocation, Genetic