label: spondyloperipheral dysplasia
label_lc: spondyloperipheral dysplasia
description: A condition caused by by truncating mutations in the C-propeptide of COL2A1. Like other type II collagen disorders it is characterized by short stature, platyspondyly and epiphyseal dysplasia. A distinguishing feature is the presence of brachydactyly with a prominent first toe.