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    Mol Cell Biol. 1990 Aug;10(8):4016-26.

    The (6;9) chromosome translocation, associated with a specific subtype of acute nonlymphocytic leukemia, leads to aberrant transcription of a target gene on 9q34.

    von Lindern M, Poustka A, Lerach H, Grosveld G.

    Department of Cell Biology and Genetics, Erasmus University, Rotterdam, The Netherlands.

    The specific (6;9)(p23;q34) chromosomal translocation is associated with a defined subtype of acute nonlymphocytic leukemia (ANLL). The 9q34 breakpoint is located at the telomeric side of the c-abl gene. Through a combination of chromosome jumping, long-range mapping, and chromosome walking, the chromosome 9 breakpoints of several t(6;9) ANLL patients were localized within a defined region of 8 kilobases (kb), 360 kb telomeric of c-abl. Subsequent cDNA cloning revealed that this region represented an intron in the middle of a gene, called Cain (can), encoding a 7.5-kb transcript. Disruption of the can gene by the translocation resulted in the expression of a new 5.5-kb can mRNA from the 6p- chromosome. Isolation of chromosome 6 sequences showed that breakpoints on 6p23 also clustered within a limited stretch of DNA. These data strongly suggest a direct involvement of the translocation in the leukemic process of t(6;9) ANLL.

    PMID: 2370860 [PubMed - indexed for MEDLINE]

    PMCID: PMC360912

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