" /> Osteogenesis imperfecta, type XIII - CISMeF





Preferred Label : Osteogenesis imperfecta, type XIII;

Symbol : OI13;

CISMeF acronym : OI13;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : Oi, type XIII;

Description : Osteogenesis imperfecta (OI) is a connective tissue disorder characterized by bone fragility and low bone mass. Due to considerable phenotypic variability, Sillence et al. (1979) developed a classification of OI subtypes based on clinical features and disease severity: 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 sclerae (259420); and OI type IV, with normal sclerae (166220). Most cases of OI are autosomal dominant with mutations in 1 of the 2 genes that code for type I collagen alpha chains, COL1A1 (120150) and COL1A2 (120160). Martinez-Glez et al. (2012) described osteogenesis imperfecta type XIII, an autosomal recessive form of the disorder characterized by normal teeth, faint blue sclerae, severe growth deficiency, borderline osteoporosis, and an average of 10 to 15 fractures a year affecting both upper and lower limbs and with severe bone deformity.;

Inheritance : Autosomal recessive;

Molecular basis : Caused by mutation in the bone morphogenetic protein-1 gene (BMP1, 112264.0001);

Laboratory abnormalities : Normal calcium level; Normal phosphate level; Normal to slightly high alkaline phosphatase; Low procollagen 1 C-peptide (in some patients); High deoxypyridinoline/creatinine (in some patients);

Prefixed ID : #614856;

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08/05/2025


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