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Recurrent reciprocal genomic rearrangements of 17q12 are associated with renal disease, diabetes and epilepsy.

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons50606

Ullmann,  Reinhard
Molecular Cytogenetics (Reinhard Ullmann), Dept. of Human Molecular Genetics (Head: Hans-Hilger Ropers), Max Planck Institute for Molecular Genetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons50501

Ropers,  Hans-Hilger
Dept. of Human Molecular Genetics (Head: Hans-Hilger Ropers), Max Planck Institute for Molecular Genetics, Max Planck Society;

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Zitation

Mefford, H. C., Clauin, S., Sharp, A. J., Moller, R. S., Ullmann, R., Kapur, R., et al. (2007). Recurrent reciprocal genomic rearrangements of 17q12 are associated with renal disease, diabetes and epilepsy. American Journal of Human Genetics: AJHG, 81(5), 1057-1069. doi:10.1086/522591.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0010-812D-1
Zusammenfassung
Most studies of genomic disorders have focused on patients with cognitive disability and/or peripheral nervous system defects. In an effort to broaden the phenotypic spectrum of this disease model, we assessed 155 autopsy samples from fetuses with well-defined developmental pathologies in regions predisposed to recurrent rearrangement, by array-based comparative genomic hybridization. We found that 6% of fetal material showed evidence of microdeletion or microduplication, including three independent events that likely resulted from unequal crossing-over between segmental duplications. One of the microdeletions, identified in a fetus with multicystic dysplastic kidneys, encompasses the TCF2 gene on 17q12, previously shown to be mutated in maturity-onset diabetes, as well as in a subset of pediatric renal abnormalities. Fine-scale mapping of the breakpoints in different patient cohorts revealed a recurrent 1.5-Mb de novo deletion in individuals with phenotypes that ranged from congenital renal abnormalities to maturity-onset diabetes of the young type 5. We also identified the reciprocal duplication, which appears to be enriched in samples from patients with epilepsy. We describe the first example of a recurrent genomic disorder associated with diabetes.