Balkan Journal of Medical Genetics

CLINICAL IMPACT OF PROXIMAL AUTOSOMAL IMBALANCES
Hamid AB, Weise A, Voigt M, Bucksch M, Kosyakova N, Liehr T,* Klein E
*Corresponding Author: Dr. Thomas Liehr, Universitätsklinikum Jena, Institut für Humangenetik, Kollegiengasse 10, D-07743 Jena, Germany; Tel.: +49-3641-935533; Fax. ++49-3641-935582; E-mail: i8lith@mti.uni-jena.de
page: 15
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Abstract

Centromere-near gain of copy number can be induced by intra- or inter-chromosomal rearrangements or by the presence of a small supernumerary marker chromosome (sSMC). Interestingly, partial trisomy to hexasomy of euchromatic material may be present in clinically healthy or affected individuals, depending on origin and size of chromosomal material involved. Here we report the known minimal sizes of all centromere-near, i.e., proximal auto-somal regions in humans, which are tolerated; over 100 Mb of coding DNA are comprised in these regions. Additionally, we have summarized the typical symptoms for nine proximal autosomal regions including genes obviously sensitive to copy numbers. Overall, studying the carriers of specific chromosomal imbalances using genomics-based medicine, combined with single cell analysis can provide the genotype-phenotype correlations and can also give hints where copy-numbersensitive genes are located in the human genome.

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