This is a rare disease with prevalence about 1 in 200,000 to 1 in 600,000. Studies showed that mutations in CUBN or AMN clustered particularly in the Scandinavian countries and the Eastern Mediterranean regions. Founder effect, higher clinical awareness to IGS, and frequent consanguineous marriages all play a role in the higher prevalence of IGS among these populations.
Imerslund–Gräsbeck syndrome
Kohlschütter-Tönz syndrome
Naegeli–Franceschetti–Jadassohn syndrome
König's syndrome
Franceschetti–Klein syndrome
Parry–Romberg syndrome
Schöpf–Schulz–Passarge syndrome
Zechi-Ceide syndrome