Bruck syndrome is an autosomal recessive syndrome consisting of bone fragility and congenital joint contractures. According to the genotype, it has been classified into types 1 and 2. Recently, mutations in FKBP10, localised to chromosome 17q21, have been identified in some patients of Bruck syndrome. Twenty-seven patients of this syndrome have been reported so far. We present a new patient of this syndrome, with frequent fractures, congenital joint contractures, kyphoscoliosis, bilateral clubfoot, and pectus carinatum. The clinical and genetic features of all previously reported cases are also reviewed.
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http://dx.doi.org/10.5603/EP.2015.0024 | DOI Listing |
J Bone Miner Res
November 2024
Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University, Ghent, Belgium.
Rare monogenic disorders often exhibit significant phenotypic variability among individuals sharing identical genetic mutations. Bruck syndrome (BS), a prime example, is characterized by bone fragility and congenital contractures, although with a pronounced variability among family members. BS arises from recessive biallelic mutations in FKBP10 or PLOD2.
View Article and Find Full Text PDFBMJ Case Rep
September 2024
Fetal Medicine, St George's University Hospitals NHS Foundation Trust, London, UK
Bruck syndrome is a rare, autosomal-recessive condition associated with features of both arthrogryposis and osteogenesis imperfecta. It is characterised by congenital large joint contractures with pterygia and bone fragility, leading to fractures and deformities, along with a short stature caused by progressive skeletal deformities. There are fewer than 50 described cases of Bruck syndrome in the literature, with no reported cases in pregnancy.
View Article and Find Full Text PDFBiochem Biophys Rep
September 2024
Division of Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.
Lysyl hydroxylase 2 (LH2) catalyzes the hydroxylation of lysine residues in the telopeptides of type I collagen. This modification is critical for the formation of stable hydroxylysine-aldehyde derived collagen cross-links, thus, for the stability of collagen fibrils. Though dysfunction of LH2 causes Bruck syndrome, recessive osteogenesis imperfecta with joint contracture, the molecular mechanisms by which LH2 affects bone formation are still not well understood.
View Article and Find Full Text PDFJ Bone Miner Res
September 2024
Orthopaedic Surgery, David Geffen School of Medicine at University of California at Los Angeles, Los Angeles, CA 90095, United States.
Bruck syndrome is an autosomal recessive form of osteogenesis imperfecta caused by biallelic variants in PLOD2 or FKBP10 and is characterized by joint contractures, bone fragility, short stature, and scoliosis. PLOD2 encodes LH2, which hydroxylates type I collagen telopeptide lysines, a critical step for collagen crosslinking. The Plod2 global knockout mouse model is limited by early embryonic lethality, and thus, the role of PLOD2 in skeletogenesis is not well understood.
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