In fact, in the revised nosology, FGFR2-related conditions are classified as “Craniosynostosis disorders” or “Bent bone disorders”, but not under “Osteogenesis Imperfecta and bone fragility”, as osteoporosis and bone fractures are not major clinical findings in FGFR2-related diseases [4]. Here, FGFR2 is linked to osteoporosis.