Neocentric small supernumerary marker chromosomes (sSMC) – three more cases and review of the literature

Language
en
Document Type
Article
Issue Date
2013-03-14
Issue Year
2007
Authors
Liehr, Thomas
Utine, G. E.
Trautmann, Udo
Rauch, Anita
Küchler, A.
Pietracz, J.
Bocian, E.
Kosyakova, N.
Mrasek, K.
Boduroglu, K.
Editor
Abstract

Here we report on three new patients with neocentric small supernumerary marker chromosomes (sSMC) derived from chromosome 2, 13 and 15, respectively. The sSMC(13) and sSMC(15) had inverted duplicated shapes and the sSMC(2) a ring chromosome shape. All three cases were clinically severely abnormal. A review of the available sSMC literature revealed that up to the present 73 neocentric sSMC cases including these three new cases have been reported. Seven of these cases were not characterized morphologi- cally; in the remainder, 80% had an inverted duplication, 17% a ring and 3% a minute shape. 81% of the reported neocentric sSMC carriers showed severe, 12% moderate and 8% no clinical abnormalities. In summary, we report three more neocentric sSMC cases, provide a review on all up to now published cases, highlight their special characteristics and compare them to centric sSMC.

Journal Title
Cytogenetic and Genome Research 2007; 118: 31-37. <http://content.karger.com/ProdukteDB/produkte.asp?typ=pdf&doi=106438> © 2007 S. Karger AG, Basel
Citation

Cytogenetic and Genome Research 2007; 118: 31-37. http://content.karger.com/ProdukteDB/produkte.asp?typ=pdf&doi=106438 © 2007 S. Karger AG, Basel

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