The exact prevalence of<unk>  is unknown. But, about 50 to 80 cases have been reported in literature. Although the occurrence of this disorder is thought to be higher. According to Orphanet, the condition occurs in 1 in 1 million people. The condition affects both males and females equally.
Schinzel–Giedion syndrome
Bardet–Biedl syndrome
Langer–Giedion syndrome
Daentl Townsend Siegel syndrome
Beckwith–Wiedemann syndrome
Letterer–Siwe disease
Prader–Willi syndrome
Weismann-Netter–Stuhl syndrome