Mesomelic Dysplasia, Savarirayan Type, also known as mesomelic dysplasia with absent fibulas and triangular tibias, is related to mesomelia. An important gene associated with Mesomelic Dysplasia, Savarirayan Type is ID4 (Inhibitor Of DNA Binding 4). Affiliated tissues include bone, and related phenotypes are skeletal dysplasia and bowing of the long bones