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Pfeiffer syndrome is a rare genetic disorder, characterized by the premature fusion of certain bones of the skull ( craniosynostosis ), which affects the shape of the head and face. The syndrome includes abnormalities of the hands and feet, such as wide and deviated thumbs and big toes. Pfeiffer syndrome is caused by mutations in the fibroblast ...
Jansen's metaphyseal chondrodysplasia ( JMC) is a disease that results from ligand -independent activation of the type 1 ( PTH1R) of the parathyroid hormone receptor, due to one of three reported mutations (activating mutation). JMC is extremely rare, and as of 2007 there are fewer than 20 reported cases worldwide.
Antley–Bixler syndrome is inherited in an autosomal recessive pattern, which means the defective gene is located on an autosome, and two copies of the gene (one inherited from each parent) are required to be born with the disorder. The parents of an individual with an autosomal recessive disorder both carry one copy of the defective gene but ...
Acrocephalosyndactyly. Acrocephalosyndactyly is a group of congenital conditions characterized by irregular features of the face and skull ( craniosynostosis) and hands and feet ( syndactyly ). [1] Craniosynostosis occurs when the cranial sutures, the fibrous tissue connecting the skull bones, fuse the cranial bones early in development.
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 and a head that appears large in comparison with the underdeveloped portions of the body.
Kleeblattschaedel is a rare malformation of the head where there is a protrusion of the skull and broadening of the face. [2] This condition is a severe type of craniosynostosis. [3] The condition can be both isolated or associated with other craniofacial dysostosises. [4] 85% of children with this condition have other anomalies. [5]
Salla disease (SD) is an autosomal recessive [2] lysosomal storage disease characterized by early physical impairment and intellectual disability. It was first described in 1979, [3] after Salla, a municipality in Finnish Lapland and is one of 40 Finnish heritage diseases . Approximately ~250 individuals with FSASD have been reported in the ...
Alternating hemiplegia of childhood. Alternating hemiplegia of childhood ( AHC) is an ultra-rare neurological disorder named for the transient episodes, often referred to as "attacks", of hemiplegia (weakness or paralysis) that those with the condition experience. It typically presents before the age of 18 months.