Spondyloepimetaphyseal Dysplasia, Sponastrime Type, also known as sponastrime dysplasia, is related to metaphyseal dysplasia and spondyloepimetaphyseal dysplasia. An important gene associated with Spondyloepimetaphyseal Dysplasia, Sponastrime Type is TONSL (Tonsoku Like, DNA Repair Protein). Affiliated tissues include bone, and related phenotypes are depressed nasal bridge and abnormal facial shape