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Genomics. 1997 Nov 15;46(1):70-7.

Identification of new translocation breakpoints at 12q13 in lipomas.

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Laboratoire de Génétique Chromosomique des Tumeurs, Faculté de Médecine, UMR 6549, CNRS/UNSA, Nice, France.


Cytogenetic studies of banded chromosomes and fluorescence in situ hybridization (FISH) of several yeast artificial chromosomes (YACs) that are part of a 128-kb resolution physical map of a portion of 12q13 revealed that 4/14 (28%) lipomas have breakpoints in 12q13. These breakpoints are more than 10 Mb away from the HMGIC gene at 12q14-q15, which is known to be modified in some lipomas. FISH with individual YACs at 12q13 enabled us to identify four YACs that span three breakpoints. Our results suggest that genes other than HMGIC on human chromosome 12 may be involved in the etiology of lipoma development.

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