Localization of candidate regions for a novel gene for Kartagener syndrome

European Journal of Human Genetics : EJHG
Ilse Gutierrez-RoelensMiikka Vikkula

Abstract

Asymmetric positioning of internal organs is a characteristics of vertebrates. The normal left-right anatomic positioning, situs solitus, sometimes does not occur normaly, leading to laterality defects. Studies in animal models have shown that laterality decisions are mediated by a cascade of genes that lead to the asymmetric expression of Nodal, LEFTA, LEFTB and PITX2 in the lateral plate mesoderm. A search for mutations in genes implicated in left-right patterning in animal models allowed genes associated with heterotaxia defects in humans to be identified. However, these genes explain only a small percentage of human situs defects, suggesting that other genes must play a role. In this study, we report a consanguineous family of Turkish origin, composed of two unaffected parents and three children, two of whom presented Kartagener syndrome. On the basis of their family history, we hypothesize autosomal recessive mode of inheritance. A genotype analysis with polymorphic markers did not show linkage with any known genes or loci causing laterality disorders. Array CGH did not detect a duplication or microdeletion greater than 1 Mb as a possible cause. Genome wide screening using 10 K Affymetrix SNP chips was performed, allowing ...Continue Reading

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Citations

Jul 20, 2007·Archives of Disease in Childhood·Andrew BushGill Phillips
Mar 16, 2007·Proceedings of the National Academy of Sciences of the United States of America·Bénédicte DuriezSerge Amselem
May 5, 2009·Paediatric Respiratory Reviews·Estelle EscudierSerge Amselem
Sep 18, 2010·Human Genomics·El-Ad David AmirVered Chalifa-Caspi

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