FGFR3 and achondroplasia: Achondroplasia is the most common form of skeletal dysplasia caused by gain-of-function variant in either G380R or G375C in the gene for the fibroblast growth factor receptor 3 (FGFR3), resulting in reduced and disproportionate growth due to defective long bone ossification centers in the cranium and axial skeleton [1].