| A rare genetic primary bone dysplasia with characteristics of disproportionate short stature with short, stiff neck and trunk and relatively long limbs, fingers and toes (which may present flexion contractures), severe vertebral body ossification delay, markedly enlarged round epiphyses of the long bones, absent ossification of pubic bones and multiple pseudoepiphyses of the short tubular bones in hands and feet. Neurological manifestations resulting from cervical spine instability may be observed. There is evidence the disease is caused by homozygous inactivating mutations in the NKX3-2 gene on chromosome 4p15. |
