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Jansen's metaphyseal chondrodysplasia (JMC) is a disease that results from ligand-independent activation of the type 1 of the parathyroid hormone receptor, due to one of three reported mutations (activating mutation). [1] JMC is extremely rare, and as of 2007 there are fewer than 20 reported cases worldwide.
Metaphyseal dysplasia, or Pyle disease, [3] is a disorder of the bones. It is a rare disease in which the outer part of the shafts of long bones is thinner than normal and there is an increased chance of fractures .
Phytohemagglutinin. CHH is an autosomal recessive [2] inherited disorder. It is a highly pleiotropic disorder. A rarely encountered genetic phenomenon, known as uniparental disomy (a genetic circumstance where a child inherits two copies of a chromosome from one parent, as opposed to one copy from each parent) has also been observed with the disorder.
Metaphyseal chondrodysplasia Schmid type is a type of chondrodysplasia associated with a deficiency of collagen, type X, alpha 1. [2] [3] [4]Unlike other "rickets syndromes", affected individuals have normal serum calcium, phosphorus, and urinary amino acid levels.
Chondrodystrophy has an autosomal recessive pattern of inheritance.. Chondrodystrophy is an autosomal recessive disorder, meaning that in order for this disease to be expressed, the affected individual must possess two copies of the allele for the disorder.
Jansen's metaphyseal chondrodysplasia; Janz syndrome; Jeavons syndrome; Jervell and Lange-Nielsen syndrome; Johanson–Blizzard syndrome; Johnson–McMillin syndrome; Johnson–Munson syndrome; Joubert syndrome; Juberg-Hellman syndrome; Jugular foramen syndrome; Juvenile polyposis syndrome; Jerusalem syndrome
Hypochondroplasia (HCH) is a developmental disorder caused by an autosomal dominant genetic defect in the fibroblast growth factor receptor 3 gene that results in a disproportionately short stature, micromelia [3] and a head that appears large in comparison with the underdeveloped portions of the body.
An osteochondrodysplasia, [note 1] or skeletal dysplasia, is a disorder of the development of bone and cartilage. [1] Osteochondrodysplasias are rare diseases.About 1 in 5,000 babies are born with some type of skeletal dysplasia. [2]