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Metaphyseal chondrodysplasia, Jansen type

Disease definition

Jansen's metaphyseal chondrodysplasia (JMC) is a very rare autosomal dominant skeletal dysplasia characterized by short-limbed short stature (due to severe metaphyseal changes that are often discovered in childhood by imaging), waddling gait, bowed legs, contracture deformities of the joints, short hands with clubbed fingers, clinodactyly, prominent upper face and small mandible, as well as chronic parathyroid hormone-independent hypercalcemia, hypercalciuria, and mild hypophosphatemia.

ORPHA:33067

  • Synonym(s): -
  • Prevalence: <1 / 1 000 000
  • Inheritance: Autosomal dominant 
  • Age of onset: Infancy, Neonatal
  • ICD-10: Q78.5
  • OMIM: 156400
  • UMLS: C0265295
  • MeSH: C537564
  • GARD: 79
  • MedDRA: -

Additional information

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