" /> Osteogenesis imperfecta, type iv - CISMeF





Preferred Label : Osteogenesis imperfecta, type iv;

Symbol : OI4;

CISMeF acronym : OI4;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : Osteogenesis imperfecta with normal sclerae; Oi, type iv;

Description : Osteogenesis imperfecta (OI) is a connective tissue disorder that is caused by an abnormality of type I collagen in over 90% of cases. Due to considerable phenotypic variability, Sillence et al. (1979) developed a classification of OI subtypes: OI type I with blue sclerae (166200); perinatal lethal OI type II, also known as congenital OI (166210); OI type III, a progressively deforming form with normal sclera (259420); and OI type IV, with normal sclerae. Levin et al. (1978) suggested that OI subtypes could be further divided into types A and B based on the absence or presence of dentinogenesis imperfecta.;

Inheritance : Autosomal dominant;

Molecular basis : Caused by mutation in the collagen I, alpha-1 polypeptide gene (COL1A1, 120150.0003); Caused by mutation in the collagen I, alpha-2 polypeptide gene (COL1A2, 120160.0004);

Prefixed ID : #166220;

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03/05/2025


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