A new complex translocation t(5;17;15)(q11;q21;q22) in acute promyelocytic leukemia.
Acute promyelocytic leukemia (APL) is associated with the t(15;17)(q22;q21) translocation which causes the fusion of the retinoic acid alpha gene (RARA) on 17q21 to the promyelocytic leukemia gene (PML) on 15q22. The two chimeric genes, PML/RARA and RARA/PML, are thought to play a role in leukemogenesis. A small proportion of patients with APL have complex or simple variants of this translocation. We report the case of a 22-year-old woman with APL carrying a complex variant translocation t(5;17;15)(q11;q12;q22) confirmed by G-banding, reverse transcription polymerase chain reaction (RT-PCR), fluorescence in situ hybridization(FISH), and spectral karyotyping analysis (SKY). The patient achieved complete remission with all-trans retinoic acid treatment and chemotherapy. These results illustrate the usefulness of combined analysis consisting of G-banding, RT-PCR, FISH, and SKY methods to identify the PML/RARA fusion gene in cases with variant t(15;17).
Abe
Shori
S
Department of Rheumatology and Hematology, Tohoku University School of Medicine, 1-1 Seiryo-machi, Aobaku, Sendai, Japan. uhouho@snh.go.jp
Ishikawa
Idumi
I
Harigae
Hideo
H
Sugawara
Tomohiro
T
D000328:Adult; D002884:Chromosomes, Human, Pair 15; D002886:Chromosomes, Human, Pair 17; D002895:Chromosomes, Human, Pair 5; D005260:Female; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D007621:Karyotyping; D015473:Leukemia, Promyelocytic, Acute / Q000188:drug therapy / Q000235:genetics*; D012074:Remission Induction; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014178:Translocation, Genetic; D014212:Tretinoin / Q000627:therapeutic use
D014212:Tretinoin