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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Med+Genet
2015 ; 52
(12
): 830-9
Nephropedia Template TP
gab.com Text
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English Wikipedia
Mutations in human homologue of chicken talpid3 gene (KIAA0586) cause a hybrid
ciliopathy with overlapping features of Jeune and Joubert syndromes
#MMPMID26386044
Malicdan MC
; Vilboux T
; Stephen J
; Maglic D
; Mian L
; Konzman D
; Guo J
; Yildirimli D
; Bryant J
; Fischer R
; Zein WM
; Snow J
; Vemulapalli M
; Mullikin JC
; Toro C
; Solomon BD
; Niederhuber JE
; Gahl WA
; Gunay-Aygun M
J Med Genet
2015[Dec]; 52
(12
): 830-9
PMID26386044
show ga
BACKGROUND: In chicken, loss of TALPID3 results in non-functional cilia and
short-rib polydactyly syndrome. This phenotype is caused by a frameshift mutation
in the chicken ortholog of the human KIAA0586 gene, which encodes a novel
coiled-coil domain protein essential for primary ciliogenesis, suggesting that
KIAA0586 can be associated with ciliopathy in human beings. METHODS: In our
patients with ciliopathy (http://www.clinicaltrials.gov: NCT00068224), we have
collected extensive clinical and neuroimaging data from affected individuals, and
performed whole exome sequencing on DNA from affected individuals and their
parents. We analysed gene expression on fibroblast cell line, and determined the
effect of gene mutation on ciliogenesis in cells derived from patients. RESULTS:
We identified biallelic mutations in the human TALPID3 ortholog, KIAA0586, in six
children with findings of overlapping Jeune and Joubert syndromes. Fibroblasts
cultured from one of the patients with Jeune-Joubert syndrome exhibited more
severe cilia defects than fibroblasts from patients with only Joubert syndrome;
this difference was reflected in KIAA0586 RNA expression levels. Rescue of the
cilia defect with full-length wild type KIAA0586 indicated a causal link between
cilia formation and KIAA0586 function. CONCLUSIONS: Our results show that
biallelic deleterious mutations in KIAA0586 lead to Joubert syndrome with or
without Jeune asphyxiating thoracic dystrophy. Furthermore, our results confirm
that KIAA0586/TALPID3 is essential in cilia formation in human beings, expand the
KIAA0586 phenotype to include features of Jeune syndrome and provide a
pathogenetic connection between Joubert and Jeune syndromes, based on aberrant
ciliogenesis.