hrp0098p1-119 | Bone, Growth Plate and Mineral Metabolism 2 | ESPE2024

Craniometaphyseal Dysplasia Mimicking Infantile Osteopetrosis: A Case of Skeletal Hyperostosis and Calcipenic Rickets

Wejaphikul Karn , Dejkhamron Prapai , Klangjorhor Jeerawan , Tengsujaritkul Maliwan

Background: Mutations in the ANKH gene affect the cellular transportation of the bone mineralization inhibitor, inorganic pyrophosphate (PPi). Loss-of-function mutations in this gene result in craniometaphyseal dysplasia (CMD), a rare disorder characterized by bone hyperostosis, particularly in the craniofacial bones, and metaphyseal widening of long bones. CMD patients experience impaired transport of PPi to extracellular compartment, leading to exce...