It appears to affect both males and females equally. As of 2020, it is unclear exactly how many people have<unk> . However, the CDC says less than 25 cases have been reported, the National Organization for Rare Disorders says about 18 cases have been reported, while the National Center for Advancing Translational Sciences says 30 cases have been reported in literature. Orphanet says it occurs in 1 in one million people.
Filippi Syndrome
Sanfilippo syndrome
Alder–Reilly anomaly
Pelger–Huët anomaly
Tietz syndrome
Treacher Collins syndrome
DeSanto-Shinawi syndrome
Klippel–Feil syndrome