• Caroline Alby, Kevin Piquand, Céline Huber, André Megarbané, Amale Ichkou, Marine Legendre, Fanny Pelluard, Ferechté Encha-Ravazi, Georges Abi-Tayeh, Bettina Bessières, Salima El Chehadeh-Djebbar, Nicole Laurent, Laurence Faivre, László Sztriha, Melinda Zombor, Hajnalka Szabó, Marion Failler, Meriem Garfa-Traore, Christine Bole, Patrick Nitschké, Mathilde Nizon, Nadia Elkhartoufi, Françoise Clerget-Darpoux, Arnold Munnich, Stanislas Lyonnet, Michel Vekemans, Sophie Saunier, Valérie Cormier-Daire, Tania Attié-Bitach, and Sophie Thomas.
• INSERM U1163, Laboratory of Embryology and Genetics of Congenital Malformations, Paris Descartes University, Sorbonne Paris Cité and Imagine Institute, 75015 Paris, France; Département de Génétique, Hôpital Necker - Enfants Malades, Assistance Publique - Hôpitaux de Paris, 75015 Paris, France.
• Am. J. Hum. Genet. 2015 Aug 6; 97 (2): 311-8.

AbstractKIAA0586, the human ortholog of chicken TALPID3, is a centrosomal protein that is essential for primary ciliogenesis. Its disruption in animal models causes defects attributed to abnormal hedgehog signaling; these defects include polydactyly and abnormal dorsoventral patterning of the neural tube. Here, we report homozygous mutations of KIAA0586 in four families affected by lethal ciliopathies ranging from a hydrolethalus phenotype to short-rib polydactyly. We show defective ciliogenesis, as well as abnormal response to SHH-signaling activation in cells derived from affected individuals, consistent with a role of KIAA0586 in primary cilia biogenesis. Whereas centriolar maturation seemed unaffected in mutant cells, we observed an abnormal extended pattern of CEP290, a centriolar satellite protein previously associated with ciliopathies. Our data show the crucial role of KIAA0586 in human primary ciliogenesis and subsequent abnormal hedgehog signaling through abnormal GLI3 processing. Our results thus establish that KIAA0586 mutations cause lethal ciliopathies. Copyright © 2015 The American Society of Human Genetics. Published by Elsevier Inc. All rights reserved.

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