The woman had a daughter who was affected with OI type III and carried an insertion frameshift mutation of c.4308_4309insA in exon 52 of the COL1A1 gene.
Because of (i) absence of COL1A1/2 mutations, (ii) a consanguineous pedigree with a similarly affected sibling and (iii) the existence of congenital joint contractures with absence of recessive variants in PLOD2, mutation analysis was performed of the FKBP10 gene, recently associated with Bruck syndrome and/or recessive OI.
We present a novel splicing mutation in the COL1A1 gene (c.1875+1G>C) in a 16-year-old Brazilian boy diagnosed as a type III osteogenesis imperfecta patient.
Serine for glycine substitutions in the C-terminal third of the alpha 1(I) chain of collagen I in five patients with nonlethal osteogenesis imperfecta.
Mutation in the carboxy-terminal propeptide of the Pro alpha 1(I) chain of type I collagen in a child with severe osteogenesis imperfecta (OI type III): possible implications for protein folding.
Substitution of arginine for glycine at position 154 of the alpha 1 chain of type I collagen in a variant of osteogenesis imperfecta: comparison to previous cases with the same mutation.
We determined that two siblings with type III osteogenesis imperfecta (OI) had the same single base substitution that converted the codon for glycine (Gly) 862 to a codon for serine (Ser) in exon 44 of the alpha 1 chain of the type I (alpha 1(I)) collagen gene (COL1A1).
We preformed linkage analyses in eight OI type III families using RFLPs associated with the COL1A1 and COL1A2 loci to determine whether mutations in the genes for type I collagen were responsible for this form of OI.
An RT-PCR-SSCP screening strategy for detection of mutations in the gene encoding the alpha 1 chain of type I collagen: application to four patients with osteogenesis imperfecta.
Further, these findings confirm that the OI type-III phenotype, previously thought to be inherited in an autosomal recessive manner, can result from new dominant mutations in the COL1A1 gene of type-I collagen.