Treacher-Collins syndrome

A disorder of craniofacial development (OMIM:154500) characterised by bilateral downwardly slanting palpebral fissures, colobomas of lower eyelids with few eyelashes medial to the defect, hypoplasia of facial bones, cleft palate, malformation of external ears, external auditory canal atresia, and bilateral conductive hearing loss.
Molecular pathology
Defects of TCOF1, which encodes a nucleolar protein involved in ribosomal DNA gene transcription, cause Treacher Collins syndrome.

单词	treacher-collins syndrome
释义	Treacher-Collins syndrome Treacher-Collins syndrome A disorder of craniofacial development (OMIM:154500) characterised by bilateral downwardly slanting palpebral fissures, colobomas of lower eyelids with few eyelashes medial to the defect, hypoplasia of facial bones, cleft palate, malformation of external ears, external auditory canal atresia, and bilateral conductive hearing loss. Molecular pathology Defects of TCOF1, which encodes a nucleolar protein involved in ribosomal DNA gene transcription, cause Treacher Collins syndrome.
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