Weissenbacher-Zweymuller syndrome (WZS) is characterized by short stature at birth, neonatal micrognathia, cleft palate, rhizomelic chondrodysplasia with 'dumbbell' shaped arm and leg bones, hypertelorism and vertebral coronal clefts.

Pierre Robin malformation is a sequence of developmental malformations characterized by micrognathia (mandibular hypoplasia), glossoptosis and cleft palate.