Which is false regarding Treacher-Collins syndrome?
A. It is the same as Franceschetti syndrome and mandibulofacial dysostosisIt is equivalent to combined Tessier clefts 7, 8 and 9. C is false. It is actually equivalent to a 6, 7 and 8 cleft. This is an autosomal dominant condition with an abnormality of chromosme 5 first described by Treacher Collins in 1900. Colobomas of the lower eyelid are common, as is cleft palate. Ear abnormalities (microtia) are seen and there is an overbite malocclusion.