RESUMEN

We identified a deletion of a gene encoding a subunit of RNA polymerases I and III, POLR1D, in an individual with Treacher Collins syndrome (TCS). Subsequently, we detected 20 additional heterozygous mutations of POLR1D in 252 individuals with TCS. Furthermore, we discovered mutations in both alleles of POLR1C in three individuals with TCS. These findings identify two additional genes involved in TCS, confirm the genetic heterogeneity of TCS and support the hypothesis that TCS is a ribosomopathy.

Asunto(s)

Disostosis Mandibulofacial/genética , Mutación , ARN Polimerasa III/genética , ARN Polimerasa I/genética , Adulto , Alelos , Niño , Preescolar , Femenino , Heterogeneidad Genética , Humanos , Masculino , Disostosis Mandibulofacial/enzimología , Fenotipo , Subunidades de Proteína/genética