Congenital osteogenesis imperfecta-microcephaly-cataracts syndrome

Congenital osteogenesis imperfecta-microcephaly-cataracts syndrome (also known as osteogenesis imperfecta with microcephaly and cataracts, or Buyse-Bull syndrome) is an extremely rare genetic disorder characterized by the combination of osteogenesis imperfecta (brittle bone disease), microcephaly (abnormally small head), and bilateral cataracts (clouding of the lenses of the eyes). This condition is present from birth and affects multiple body systems, including the skeletal system, the central nervous system, and the eyes. The skeletal features include bone fragility with susceptibility to fractures, which is the hallmark of osteogenesis imperfecta. Affected individuals may present with multiple fractures at birth or in early infancy, short stature, and skeletal deformities. Microcephaly suggests impaired brain growth and may be associated with intellectual disability or developmental delay. Bilateral cataracts can significantly impair vision from early life. Additional features that have been reported in some cases include joint hypermobility and blue sclerae. This syndrome has been described in only a very small number of patients in the medical literature, making it one of the rarest forms of osteogenesis imperfecta. Due to its extreme rarity, there is no specific treatment for this condition. Management is supportive and multidisciplinary, involving orthopedic care for fractures and skeletal complications, ophthalmologic intervention for cataracts (including possible surgical removal), and developmental support services. Bisphosphonate therapy, commonly used in other forms of osteogenesis imperfecta to improve bone density, may be considered but evidence specific to this syndrome is lacking.

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