Two affected siblings reported by Tanaka were born from a consanguineous marriage. Though a majority of cases originate in Japan, however two siblings reported by Garg were Portuguese and also born from a consanguineous marriage.
Nakajo syndrome
DeSanto-Shinawi syndrome
Currarino syndrome
Mungan syndrome
Rotor syndrome
Baggio–Yoshinari syndrome
Ardalan–Shoja–Kiuru syndrome
Okamoto syndrome