Spondyloepimetaphyseal Dysplasia with Joint Laxity, Type 3, also known as semdjl3, is related to exoc6b-related spondyloepimetaphyseal dysplasia with joint laxity. An important gene associated with Spondyloepimetaphyseal Dysplasia with Joint Laxity, Type 3 is EXOC6B (Exocyst Complex Component 6B). Affiliated tissues include bone, and related phenotypes are scoliosis and obesity