BMP1 and osteogenesis imperfecta: While Bmp1 and Aclp mutants provide insight into mechanisms of GS in the mouse, they do not phenotypically model BMP1 and AEPB1 (ACLP) autosomal recessive mutations in humans, which cause Ehlers‐Danlos syndrome, classic‐like 2 and osteogenesis imperfecta, type XIII, respectively.