All of the following are featured of Treacher Collins syndrome, except
Treacher Collins syndrome or mandibulofacial dysostosis is a group of closely related defects of the head and face, characterised by

Antimongoloid palpebral fissures with a coloboma of the outer portion of the lower eyelid
Hypoplasia of the malar bones and mandible 
Malformation of the external ear
Macrostomia, high palate and malocclusion of teeth
Blind fistulas between angles of ears and angles of the mouth
Anti-mongoloid palpebral fissure
Hypoplasia of malar bones and mandible
Macrostomia, high palate
Osteomas of bone