" /> Metaphyseal chondrodysplasia, jansen type - CISMeF





Preferred Label : Metaphyseal chondrodysplasia, jansen type;

Symbol : MCDJ;

CISMeF acronym : MCDJ;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : Metaphyseal chondrodysplasia, murk jansen type;

Description : The Murk Jansen type of metaphyseal chondrodysplasia is characterized by severe short stature, short bowed limbs, clinodactyly, prominent upper face, and small mandible. Hypercalcemia and hypophosphatemia occur despite the lack of parathyroid abnormalities (summary by Cohen, 2002).;

Inheritance : Autosomal dominant;

Molecular basis : Caused by mutations in the parathyoid hormone receptor 1 gene (PTHR1, 168468.0001);

Laboratory abnormalities : Hypophosphatemia; Hypercalciuria; Hyperphosphaturia; Parathyroid hormone-related peptide (PTHrP) absent to low; Parathyroid hormone (PTH) absent to low; Elevated alkaline phosphatase; Elevated 1,25(OH)2 D3; Increased urinary excretion of cAMP; Hypercalcemia;

Prefixed ID : #156400;

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04/05/2025


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