This disorder affects all demographics equally. The two families that were studied are of European ancestry.<unk>  is considered to be a rare disease because it affects one individual out of one million.
Wilson–Turner syndrome
Smith–Magenis syndrome
Wilson–Mikity syndrome
Kapur–Toriello syndrome
Parsonage–Turner syndrome
Rabson–Mendenhall syndrome
Malouf syndrome
Beckwith–Wiedemann syndrome