SP7 and osteogenesis imperfecta: Other genes such as, CRTAP, P3H1, FKBP10, PPIB, SP7/Osterix (OSX), SERPINF1, SERPINH1, are associated with AR forms of OI (Alanay et al., 2010; Baldridge et al., 2008; Christiansen et al., 2010; Lapunzina et al., 2010; van Dijk et al., 2009).