NCIt definition : An autosomal dominant disorder that is often caused by a defect in fibroblast growth
factor receptor 3, and characterized by short stature, micromelia, and a comparatively
large head. The features are milder than those seen in achondroplasia.;
Alternative definition : NICHD: A condition phenotypically similar to, but milder than, achondroplasia that
is often caused by mutations in the FGFR3 gene.;