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Bruck syndrome (BS)

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Bruck syndrome (BS) is a very rare syndrome in which bone fragility is associated with congenital joint contractures

  • a rare autosomal recessive form of osteogenesis imperfecta (OI), which is mainly characterized by joint contractures and recurrent fragility fractures
    • mutations in FKBP10 and PLOD2 were identified as the underlying genetic defects of Bruck syndrome (1)

  • Bruck syndrome was first reported by Dr. Bruck in 1897

  • Viljoen et al. in 1989 reported five children with multiple fractures and congenital joint contractures, and they suggested that this disorder be named Bruck syndrome

  • FKBP10 mutation causes phenotype heterogeneity
    • is a cause of osteogenesis imperfecta with different severities and also a cause of BS

  • FKBP10 gene has been located on chromosome 17q21.2
    • protein is known as a molecular chaperone and is located in the endoplasmic reticulum
    • ability of FK506 Binding Protein 10 (FKBP10) to act as a collagen chaperone justifies its role in the pathogenesis of osteogenesis imperfecta
    • mutations in FKBP10 have been detected in a few BS patients
      • FKBP10 mutation is associated with phenotype heterogeneity

Reference:

  • Lv F et al. Novel Mutations in PLOD2 Cause Rare Bruck Syndrome.Calcif Tissue Int. 2018 Mar;102(3):296-309
  • Datta V, Sinha A, Saili A et al. Bruck syndrome. Indian J Pediatr 2005; 72: 441-442.
  • Viljoen D, Versfeld G, Beighton P. Osteogenesis imperfecta with congenital joint contractures (Bruck syndrome). Clin Genet 1989; 36: 122-126.
  • Bruck A. Multiple fractures associated with joint ankylosis and muscle atrophy. Dtsch Med Wochenschr 1897; 23: 152-155.
  • Alanay Y, Avaygan H, Camacho N et al. Mutations in the gene encoding the RER protein FKBP65 cause autosomal-recessive osteogenesis imperfecta. Am J Hum Genet 2010; 86: 551-559.

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