The exact prevalence is unknown but is said to occur in 1 in a million births in North America. The disorder is said to occur in 1 in 1 million or 1 in 3 million people in North America.
Schimke syndrome
Benedikt syndrome
Schimmelpenning syndrome
Leschke syndrome
Eiken syndrome
Shapiro syndrome
Catel–Manzke syndrome
Muenke syndrome