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Eur J Hum Genet. 1998 Sep-Oct;6(5):439-44.

Detection of a concomitant distal deletion in an inverted duplication of chromosome 3. Is there an overall mechanism for the origin of such duplications/deficiencies?

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  • 1Department of Human Genetics, University of Kiel, Germany. jenderny@mail.labor-keeser-arndt.de


We describe the first inverted duplication of the p21.3p26 region of chromosome 3 in a child with phenotypic features of the trisomy 3p syndrome. This uncommon type of aberration was verified by multicolour fluorescence in situ hybridisation (FISH) using yeast artificial chromosome (YAC) clones from chromosome 3 (CEPH library). With a newly constructed YAC clone from the 3p26 region an unexpected subtelomeric deletion was diagnosed in the aberrant chromosome 3. Using the primed in situ labelling (PRINS) method, telomeres were found to be present on the recombinant chromosome 3. The repeated appearance of concomitant distal deletions in inverted duplications suggests that an overall mechanism exists for the origin of such duplications/deficiencies.

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