" /> Acrofacial dysostosis 1, nager type - CISMeF





Preferred Label : Acrofacial dysostosis 1, nager type;

Symbol : AFD1;

CISMeF acronym : AFD1;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : Afd, nager type; Nager acrofacial dysostosis; Nager syndrome; Mandibulofacial dysostosis, treacher collins type, with limb anomalies;

Description : Nager syndrome is the prototype for a group of disorders collectively referred to as the acrofacial dysostoses (AFDs), which are characterized by malformation of the craniofacial skeleton and the limbs. The major facial features of Nager syndrome include downslanted palpebral fissures, midface retrusion, and micrognathia, the latter of which often requires the placement of a tracheostomy in early childhood. Limb defects typically involve the anterior (radial) elements of the upper limbs and manifest as small or absent thumbs, triphalangeal thumbs, radial hyoplasia or aplasia, and radioulnar synostosis. Phocomelia of the upper limbs and, occasionally, lower-limb defects have also been reported. The presence of anterior upper-limb defects and the typical lack of lower-limb involvement distinguishes Nager syndrome from Miller syndrome (263750), another rare AFD; however, distingushing Nager syndrome from other AFDs, including Miller syndrome, can be challenging (summary by Bernier et al., 2012).;

Inheritance : Autosomal dominant;

Molecular basis : Caused by mutation in the splicing factor 3B, subunit 4 gene (SF3B4, 605593.0001);

Prefixed ID : #154400;

Details


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25/05/2025


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© Rouen University Hospital. Any partial or total use of this material must mention the source.

" /> Acrofacial dysostosis 1, nager type - CISMeF





Preferred Label : Acrofacial dysostosis 1, nager type;

Symbol : AFD1;

CISMeF acronym : AFD1;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : Afd, nager type; Nager acrofacial dysostosis; Nager syndrome; Mandibulofacial dysostosis, treacher collins type, with limb anomalies;

Description : Nager syndrome is the prototype for a group of disorders collectively referred to as the acrofacial dysostoses (AFDs), which are characterized by malformation of the craniofacial skeleton and the limbs. The major facial features of Nager syndrome include downslanted palpebral fissures, midface retrusion, and micrognathia, the latter of which often requires the placement of a tracheostomy in early childhood. Limb defects typically involve the anterior (radial) elements of the upper limbs and manifest as small or absent thumbs, triphalangeal thumbs, radial hyoplasia or aplasia, and radioulnar synostosis. Phocomelia of the upper limbs and, occasionally, lower-limb defects have also been reported. The presence of anterior upper-limb defects and the typical lack of lower-limb involvement distinguishes Nager syndrome from Miller syndrome (263750), another rare AFD; however, distingushing Nager syndrome from other AFDs, including Miller syndrome, can be challenging (summary by Bernier et al., 2012).;

Inheritance : Autosomal dominant;

Molecular basis : Caused by mutation in the splicing factor 3B, subunit 4 gene (SF3B4, 605593.0001);

Prefixed ID : #154400;

Details


You can consult :


Nous contacter.
25/05/2025


[Home] [Top]

© Rouen University Hospital. Any partial or total use of this material must mention the source.