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Leuk Res ; 28(2): 149-57, 2004 Feb.
Article in English | MEDLINE | ID: mdl-14654079

ABSTRACT

We previously found that expression of the Mm-1 cell-derived transplantability-associated gene 1b (MmTRA1b)/phospholipid scramblase 1 gene was markedly induced during the granulocytic differentiation of human myeloid leukemia cells. To evaluate the role of MmTRA1b expression in human myeloid leukemia, we investigated the relative levels of MmTRA1b transcripts in 81 patients with acute myelogenous leukemia (AML) by the reverse transcriptase polymerase chain reaction. The expression of MmTRA1b in AML-M1, -M5a and -M5b was significantly lower than that in normal bone marrow cells. The levels of MmTRA1b expression in AML-M2 and -M4 varied among patients. Higher MmTRA1b mRNA levels were associated with significantly longer overall survival in AML, especially in AML-M4 patients, independent of chromosomal aberrations such as t(8;21) and inv(16). The present results suggest that the MmTRA1b mRNA level is a new prognostic factor for AML, especially the AML-M4 subtype.


Subject(s)
Carrier Proteins/genetics , Leukemia, Myeloid, Acute/diagnosis , Membrane Proteins/genetics , Phospholipid Transfer Proteins , Adult , Aged , Aged, 80 and over , Bone Marrow/pathology , Carrier Proteins/analysis , Case-Control Studies , Cytogenetic Analysis , Female , Humans , Leukemia, Myeloid, Acute/classification , Leukemia, Myeloid, Acute/enzymology , Male , Membrane Proteins/analysis , Middle Aged , Prognosis , RNA, Messenger/analysis , Reverse Transcriptase Polymerase Chain Reaction , Survival Analysis
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