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1 Department of Pathology, Brigham and Womens Hospital, Boston, Massachusetts; 2 Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota; 3 Department of Pathology, Massachusetts General Hospital, Boston, Massachusetts; 4 Department of Pathology, University of Nebraska Medical Center, Omaha, Nebraska; 5 Department of Pathology, Childrens Hospital, Boston, Massachusetts; and 6 Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
Aneurysmal bone cyst (ABC) is a locally aggressive osseous lesion that typically occurs during the first two decades of life. ABC was regarded historically as a nonneoplastic process, but recent cytogenetic data have shown clonal rearrangements of chromosomal bands 16q22 and 17p13, indicating a neoplastic basis in at least some ABCs. Herein we show that a recurring ABC chromosomal translocation t(16;17)(q22;p13) creates a fusion gene in which the osteoblast cadherin 11 gene (CDH11) promoter region on 16q22 is juxtaposed to the entire ubiquitin-specific protease USP6 (Tre2) coding sequence on 17p13. CDH11-USP6 fusion transcripts were demonstrated only in ABC with t(16;17) but other ABCs had CDH11 or USP6 rearrangements resulting from alternate cytogenetic mechanisms. CDH11 is expressed strongly in bone, and our findings implicate a novel oncogenic mechanism in which deregulated USP6 transcription results from juxtaposition to the highly active CDH11 promoter.
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A. M. Oliveira, A. R. Perez-Atayde, C. Y. Inwards, F. Medeiros, V. Derr, B.-L. Hsi, M. C. Gebhardt, A. E. Rosenberg, and J. A. Fletcher USP6 and CDH11 Oncogenes Identify the Neoplastic Cell in Primary Aneurysmal Bone Cysts and Are Absent in So-Called Secondary Aneurysmal Bone Cysts Am. J. Pathol., November 1, 2004; 165(5): 1773 - 1780. [Abstract] [Full Text] [PDF] |
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