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Am J Hum Genet. 2010 Feb 12;86(2):262-6. doi: 10.1016/j.ajhg.2010.01.008. Epub 2010 Feb 4.

Warsaw breakage syndrome, a cohesinopathy associated with mutations in the XPD helicase family member DDX11/ChlR1.

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  • 1Department of Clinical Genetics, VU University Medical Center, Van der Boechorststraat 7, Amsterdam, The Netherlands.


The iron-sulfur-containing DNA helicases XPD, FANCJ, DDX11, and RTEL represent a small subclass of superfamily 2 helicases. XPD and FANCJ have been connected to the genetic instability syndromes xeroderma pigmentosum and Fanconi anemia. Here, we report a human individual with biallelic mutations in DDX11. Defective DDX11 is associated with a unique cellular phenotype in which features of Fanconi anemia (drug-induced chromosomal breakage) and Roberts syndrome (sister chromatid cohesion defects) coexist. The DDX11-deficient patient represents another cohesinopathy, besides Cornelia de Lange syndrome and Roberts syndrome, and shows that DDX11 functions at the interface between DNA repair and sister chromatid cohesion.

Copyright (c) 2010 The American Society of Human Genetics. Published by Elsevier Inc. All rights reserved.

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