J Genet Med.  2013 Dec;10(2):109-112. 10.5734/JGM.2013.10.2.109.

A Novel Insertion in Exon 23 of the TCOF1 Gene in a Newborn Infant with Treacher Collins Syndrome

• Yang JH
• Cha HH
• Yoon HS

• KMID: 1811006
• DOI: http://doi.org/10.5734/JGM.2013.10.2.109

Abstract

Treacher Collins syndrome (TCS) is the most common and well known mandibulofacial dysostosis with characteristic clinical features including downward slanting of palpebral fissures, coloboma of the lower eyelid, hypoplastic zygomatic arches, micrognathia, macrostomia, microtia, and other deformities of the ears. TCS is caused by mutations in at least 3 genes involved in pre-rRNA transcription: TCOF1, POLR1D and POLR1C. We experienced a 1-day-old female infant with characteristic clinical features of TCS. A novel, heterozygotic mutation within the TCOF1 gene (c.3874_3875insG, p.Ala1292Glyfs*30) was identified to cause a premature stop codon.

Keyword

Treacher Collins syndrome; TCOF1; Mutation

MeSH Terms

Codon, Nonsense
Coloboma
Congenital Abnormalities
Ear
Exons*
Eyelids
Female
Humans
Infant
Infant, Newborn*
Macrostomia
Mandibulofacial Dysostosis*
RNA Precursors
Zygoma
Codon, Nonsense
RNA Precursors