The prevalence of<unk>  is estimated to be 1 in 8,500 to 14,000 people. Hearing loss has a higher incidence in those with cleft palate versus non-cleft palate. One study showed hearing loss in<unk>  at an average of 83%, versus an average of 60% of individuals with cleft without<unk> . Another study with children showed that hearing loss was found more frequently with<unk>  (73.3%) compared to those with cleft and no<unk>  (58.1%). Hearing loss with<unk>  typically is a bilateral, conductive loss (affecting the outer/middle portion of the ear).
Pierre Robin sequence
First arch syndrome
Roberts syndrome
XK aprosencephaly
Cleidocranial dysostosis
Spina bifida
Marden–Walker syndrome
Trismus pseudocamptodactyly syndrome