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KMID : 0981820090290030199
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Korean Journal of Laboratory Medicine
2009 Volume.29 No. 3 p.199 ~ p.203
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A Novel Translocation t(1;5)(p32;q31) that Was Not Associated with the TAL1 Rearrangement in a Case of T Lymphoblastic Leukemia/Lymphoma
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Cho Hee-Soon
Kim Min-Kyoung
Bae Young-Kyung
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Abstract
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Chromosome 1 band p32 (1p32) aberrations are common in T lymphoblastic leukemia/lymphoma (T-ALL/LBL). Two types of 1p32 aberrations include translocations with different partners and submicroscopic interstitial deletion. Both aberrations are known to result in TAL1 gene deregulation. The t(1;5)(p32;q31) is a rare translocation of 1p32 in T-ALL. We now present the second case of t(1;5)(p32;q31) in T-ALL, which was present as a primary cytogenetic abnormality, with a review of the relevant literature. Interestingly, neither the translocation of the TAL1 gene nor aberrant expression of TAL1 protein was detected by fluorescent in situ hybridization (FISH) and by immunohistochemical staining in this case.
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KEYWORD
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T-ALL, t(1, 5)(p32, q31), TAL1 gene
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