Re-focusing on Agnathia-Otocephaly complex.
Fiche publication
Date publication
mars 2021
Journal
Clinical oral investigations
Auteurs
Membres identifiés du Cancéropôle Est :
Pr THAUVIN-ROBINET Christel
Tous les auteurs :
Dubucs C, Chassaing N, Sergi C, Aubert-Mucca M, Attié-Bitach T, Lacombe D, Thauvin-Robinet C, Arpin S, Perez MJ, Cabrol C, Chen CP, Aziza J, Colin E, Martinovic J, Calvas P, Plaisancié J
Lien Pubmed
Résumé
Agnathia-otocephaly complex is a rare condition characterized by mandibular hypoplasia or agnathia, ear anomalies (melotia/synotia) and microstomia with aglossia. This severe anomaly of the first branchial arch is most often lethal. The estimated incidence is less than 1 in 70.000 births, with etiologies linked to both genetic and teratogenic factors. Most of the cases are sporadic. To date, two genes have been described in humans to be involved in this condition: OTX2 and PRRX1. Nevertheless, the overall proportion of mutated cases is unknown and a significant number of patients remain without molecular diagnosis. Thus, the involvement of other genes than OTX2 and PRRX1 in the agnathia-otocephaly complex is not unlikely. Heterozygous mutations in Cnbp in mice are responsible for mandibular and eye defects mimicking the agnathia-otocephaly complex in humans and appear as a good candidate. Therefore, in this study, we aimed (i) to collect patients presenting with agnathia-otocephaly complex for screening CNBP, in parallel with OTX2 and PRRX1, to check its possible implication in the human phenotype and (ii) to compare our results with the literature data to estimate the proportion of mutated cases after genetic testing.
Mots clés
Agnathia-otocephaly complex, CNBP, Craniofacial development, OTX2, PRRX1, Treacher–Collins syndrome
Référence
Clin Oral Investig. 2021 03;25(3):1353-1362