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Thirty-three novel COL1A1 and COL1A2 mutations in patients with osteogenesis imperfecta types I-IV

✍ Scribed by L.M. Ward; L. Lalic; P.J. Roughley; F.H. Glorieux

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
26 KB
Volume
17
Category
Article
ISSN
1059-7794

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✦ Synopsis

Osteogenesis imperfecta (OI) is a heritable disease of bone characterized by low bone mass and bone fragility. Six different types of OI have been described to date, based on clinical phenotype and histological findings. The genetic defect in many patients with OI types I-IV is due to mutations in the genes encoding type I collagen, while patients with OI types V and VI show no evidence of mutations in the COL1A1/COL1A2 genes. Here we report thirty-three novel mutations in patients with types I-IV OI. Sixteen mutations were in COL1A1 and seventeen were in COL1A2. Most mutations resulted in substitutions for glycine: one of these, a doublet GG>CC transversion, created a unique Gly-->Pro missense mutation in the triple helical domain of COL1A2. Two rare triple helical Gly-->Glu substitutions in COL1A2 are also described. In addition, there were six single-base deletion mutations resulting in frameshifts, seven splice junction mutations, and a 9-bp triple helix insertion associated with a severe (OI II) phenotype. The variety of mutations described in the COL1A1/COL1A2 genes giving rise to an OI phenotype is in accordance with the clinical heterogeneity of the disease. Hum Mutat 17:434, 2001.

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Osteogenesis Imperfecta (OI) is a heterogeneous group of inherited disorders characterized by increased bone fragility, with clinical severity ranging from mild to lethal. To date, seven types of OI have been described, based on clinical phenotype and histological findings. Most patients with a clin

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## Communicated by Peter Byers Osteogenesis imperfecta (OI) is caused by mutations in COL1A1 and COL1A2 that code for the a1 and a2 chains of type I collagen. Phenotypes correlate with the mutation types in that COL1A1 null mutations lead to OI type I, and structural mutations in a1(I) or a2(I) lea

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The original article to which this Erratum refers was published in Human Mutation 24: 147-154 (2004). In Table 1 of the published original article, the fourth mutation should be c.913G4C (not c.913G4A as originally printed) and it should be bolded as it is a novel mutation. In addition, the last mu

Heterozygous C-propeptide mutations in C
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## Abstract Osteogenesis imperfecta type IIC (OI IIC) is a rare variant of lethal OI that has been considered to be an autosomal recessive trait. Twisted, slender long bones with dense metaphyseal margins and normal vertebral bodies in OI IIC contrast with crumpled, thick long bones and multiple ve