" /> Treacher collins syndrome 1 - CISMeF





Preferred Label : Treacher collins syndrome 1;

Symbol : TCS1;

CISMeF acronym : MFD1; TCOF; TCS; TCS1;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : Mandibulofacial dysostosis; TCS; Treacher collins syndrome; Treacher collins-franceschetti syndrome; MFD1; TCOF;

Description : Treacher Collins syndrome is a disorder of craniofacial development. The features include antimongoloid slant of the eyes, coloboma of the lid, micrognathia, microtia and other deformity of the ears, hypoplastic zygomatic arches, and macrostomia. Conductive hearing loss and cleft palate are often present (Dixon, 1996). - Genetic Heterogeneity of Treacher Collins Syndrome Treacher Collins syndrome-2 (TCS2; 613717) is caused by heterozygous mutation in the POLR1D gene (613715) on chromosome 13q12.2. Treacher Collins syndrome-3 (TCS3; 248390) is caused by compound heterozygous mutation in the POLR1C gene (610060) on chromosome 6.;

Inheritance : Autosomal dominant;

Molecular basis : Caused by mutation in the treacle gene (TCOF1, 154500.0001);

Prefixed ID : #154500;

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30/07/2025


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