FGF23 and McCune-Albright syndrome: Other syndromes can also be associated with FGF23-mediated hypophosphatemia, including fibrous dysplasia/McCune-Albright syndrome (FD/MAS), cutaneous skeletal hypophosphatemia syndrome (CSHS), neurofibromatosis type 1, osteoglophonic dysplasia, and Jansen’s metaphyseal chrondrodysplasia [12–16].