Question: What causes Osteogenesis imperfecta ?
Answer: What causes osteogenesis imperfecta? Osteogenesis imperfecta (OI) may be caused by changes (mutations) in any of several genes. OI is most commonly due to a mutation in either the COL1A1 or COL1A2 gene, causing OI types I through IV. These genes play a role in how the body makes collagen, a material that helps to strengthen the bones. The type and severity of OI depends on the effect that the specific mutation has on normal collagen production. OI caused by mutations in these genes is inherited in an autosomal dominant manner. In about 10% of people with OI, the COL1A1 and COL1A2 genes are normal and the condition is due to mutations in other genes; many of these people have an autosomal recessive form of OI. Other genes in which mutations may be responsible for less common types of OI, some of which have been reported in only one individual or family, include: IFITM5 (type V) SERPINF1 (type VI) CRTAP (type VII) LEPRE1, also called P3H1 (type VIII) PPIB (type IX) SERPINH1 (type X) FKBP10 (type XI) SP7 (type XII) BMP1 (type XIII) TMEM38B (type XIV) WNT1 (type XV) SPARC (type XVII)
Source: GARD