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Hum Mol Genet 2020 Jul 21;2911:1900-1921. doi: 10.1093/hmg/ddaa050.
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Novel truncating mutations in CTNND1 cause a dominant craniofacial and cardiac syndrome.

Alharatani R , Ververi A , Beleza-Meireles A , Ji W , Mis E , Patterson QT , Griffin JN , Bhujel N , Chang CA , Dixit A , Konstantino M , Healy C , Hannan S , Neo N , Cash A , Li D , Bhoj E , Zackai EH , Cleaver R , Baralle D , McEntagart M , Newbury-Ecob R , Scott R , Hurst JA , Au PYB , Hosey MT , Khokha M , Marciano DK , Lakhani SA , Liu KJ .

CTNND1 encodes the p120-catenin (p120) protein, which has a wide range of functions, including the maintenance of cell-cell junctions, regulation of the epithelial-mesenchymal transition and transcriptional signalling. Due to advances in next-generation sequencing, CTNND1 has been implicated in human diseases including cleft palate and blepharocheilodontic (BCD) syndrome albeit only recently. In this study, we identify eight novel protein-truncating variants, six de novo, in 13 participants from nine families presenting with craniofacial dysmorphisms including cleft palate and hypodontia, as well as congenital cardiac anomalies, limb dysmorphologies and neurodevelopmental disorders. Using conditional deletions in mice as well as CRISPR/Cas9 approaches to target CTNND1 in Xenopus, we identified a subset of phenotypes that can be linked to p120-catenin in epithelial integrity and turnover, and additional phenotypes that suggest mesenchymal roles of CTNND1. We propose that CTNND1 variants have a wider developmental role than previously described and that variations in this gene underlie not only cleft palate and BCD but may be expanded to a broader velocardiofacial-like syndrome.

PubMed ID: 32196547
PMC ID: PMC7372553
Article link: Hum Mol Genet
Grant support: [+]

Species referenced: Xenopus tropicalis
Genes referenced: arvcf cdh1 col2a1 ctnnd1 itk npat pax2 plp1 rho sftpc slc7a5 tbx1 tnfrsf11b wnt1
gRNAs referenced: ctnnd1 gRNA1 ctnnd1 gRNA2

Disease Ontology terms: CHARGE syndrome [+]
Phenotypes: Xtr Wt + ctnnd1 CRISPR (Fig.7.B) [+]

Article Images: [+] show captions
References [+] :
Ababneh, Blepharo-cheilo-dontic (BCD) syndrome: expanding the phenotype, case report and review of literature. 2014, Pubmed