title: A cross-sectional multicenter study of osteogenesis imperfecta in North America - results from the linked clinical research centers.
abstract: Osteogenesis imperfecta (OI) is the most common skeletal dysplasia that predisposes to recurrent fractures and bone deformities. In spite of significant advances in understanding the genetic basis of OI, there have been no large-scale natural history studies. To better understand the natural history and improve the care of patients, a network of Linked Clinical Research Centers (LCRC) was established. Subjects with OI were enrolled in a longitudinal study, and in this report, we present cross-sectional data on the largest cohort of OI subjects (n = 544). OI type III subjects had higher prevalence of dentinogenesis imperfecta, severe scoliosis, and long bone deformities as compared to those with OI types I and IV. Whereas the mean lumbar spine area bone mineral density (LS aBMD) was low across all OI subtypes, those with more severe forms had lower bone mass. Molecular testing may help predict the subtype in type I collagen-related OI. Analysis of such well-collected and unbiased data in OI can not only help answering questions that are relevant to patient care but also foster hypothesis-driven research, especially in the context of 'phenotypic expansion' driven by next-generation sequencing.
authors.affiliation: Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
authors.forename: R M
authors.initials: RM
authors.lastname: Patel
authors.forename: S C S
authors.initials: SC
authors.lastname: Nagamani
authors.forename: D
authors.initials: D
authors.lastname: Cuthbertson
authors.forename: P M
authors.initials: PM
authors.lastname: Campeau
authors.forename: J P
authors.initials: JP
authors.lastname: Krischer
authors.forename: J R
authors.initials: JR
authors.lastname: Shapiro
authors.forename: R D
authors.initials: RD
authors.lastname: Steiner
authors.forename: P A
authors.initials: PA
authors.lastname: Smith
authors.forename: M B
authors.initials: MB
authors.lastname: Bober
authors.forename: P H
authors.initials: PH
authors.lastname: Byers
authors.forename: M
authors.initials: M
authors.lastname: Pepin
authors.forename: M
authors.initials: M
authors.lastname: Durigova
authors.forename: F H
authors.initials: FH
authors.lastname: Glorieux
authors.forename: F
authors.initials: F
authors.lastname: Rauch
authors.forename: B H
authors.initials: BH
authors.lastname: Lee
authors.forename: T
authors.initials: T
authors.lastname: Hart
authors.forename: V R
authors.initials: VR
authors.lastname: Sutton
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D015519:Bone Density; D002648:Child; D002675:Child, Preschool; D024042:Collagen Type I / Q000235:genetics*; D000090602:Collagen Type I, alpha 1 Chain; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D009154:Mutation; D009656:North America; D010013:Osteogenesis Imperfecta / Q000175:diagnosis / Q000235:genetics* / Q000503:physiopathology
chemical_list: D024042:Collagen Type I; D000090602:Collagen Type I, alpha 1 Chain
keywords: bone mineral density in osteogenesis imperfecta; history study; longitudinal study; natural history study; osteogenesis imperfecta
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