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.

Cleft palate is a developmental defect of the palate resulting from a failure of fusion of the palatine processes and manifesting as a separation of the roof of the mouth (soft and hard palate).