<unk>  is a rare genetic disorder that affects bone growth.
Ellis-van Creveld syndrome
Smith-Lemli-Opitz syndrome
Lutz-Richner and Landolt syndrome
Opitz-Frias syndrome
Fitzsimmons-Walson-Mellor syndrome
Smith–Lemli–Opitz syndrome
Landau-Kleffner syndrome
Peutz-Jeghers syndrome