Expression of the TEL/EVI1 fusion transcript in a patient with chronic myelogenous leukemia with t(3;12)(q26;p13).
The t(3;12)(q26;p13) translocation is a recurrent chromosomal aberration observed in myeloid malignancies. It has been shown that the translocation results in the fusion of the TEL (ETV6) gene at 12p13 and the EV11 gene at 3q26. We report the first case with Philadelphia (Ph)-positive chronic myelogenous leukemia (CML) expressing the TEL/EVI1 fusion transcript. A 26-year-old man was initially diagnosed as having the chronic phase of Ph-positive CML. The t(3;12)(q26;p13) emerged 16 months prior to the myeloid blastic crisis. Reverse transcriptase-polymerase chain reaction detected the TEL/EVI1 transcript without the intervening 5' non-coding exon of EVI1, suggesting that inappropriate expression of the EVI1 protein driven by the TEL promotor could play a critical role in progression to the blast crisis of CML.
Nakamura
Yuichi
Y
Department of Hematology, Dokkyo University School of Medicine, Tochigi, Japan.
Nakazato
Hiroshi
H
Sato
Yuko
Y
Furusawa
Shinpei
S
Mitani
Kinuko
K
D000328:Adult; D002881:Chromosomes, Human, Pair 12; D002893:Chromosomes, Human, Pair 3; D004268:DNA-Binding Proteins / Q000235:genetics*; D015870:Gene Expression; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D015464:Leukemia, Myelogenous, Chronic, BCR-ABL Positive / Q000235:genetics*; D000074008:MDS1 and EVI1 Complex Locus Protein; D008297:Male; D015514:Oncogene Proteins, Fusion / Q000235:genetics*; D050783:Proto-Oncogene Proteins c-ets; D011519:Proto-Oncogenes; D012097:Repressor Proteins / Q000235:genetics*; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014157:Transcription Factors; D014178:Translocation, Genetic; D000097764:ETS Translocation Variant 6 Protein
D004268:DNA-Binding Proteins; D000074008:MDS1 and EVI1 Complex Locus Protein; D015514:Oncogene Proteins, Fusion; D050783:Proto-Oncogene Proteins c-ets; D012097:Repressor Proteins; D014157:Transcription Factors; D000097764:ETS Translocation Variant 6 Protein; C063575:MECOM protein, human