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Living with Craniofacial dysplasia - osteopenia syndrome

A rare genetic condition with distinct facial features, weak bones that break often, and hearing and vision problems.

Understanding Craniofacial dysplasia - osteopenia syndrome

Craniofacial dysplasia-osteopenia syndrome is a rare genetic condition with distinct facial features and thin, weak bones.

Weak bones (osteopenia) lead to repeated fractures of the long bones. People also have severe nearsightedness, mild to moderate hearing loss, enamel problems in the teeth, sloping shoulders, and mild intellectual disability. Facial features include a prominent forehead, very wide-set eyes, and a small jaw. It starts in newborns and infants.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Weak bones and repeated fractures
  • Intellectual disability
  • Global developmental delay
  • Early closure of skull bones (craniosynostosis)
  • Missing teeth and bad bite
  • Low parathyroid hormone (hypoparathyroidism)

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include bone and joint specialists, brain and nervous system specialists, eye disease specialists and genetic specialists.

  3. Consider genetic testing

    Changes in IRX5 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

Care & treatment

Care team
Bone and joint specialists (orthopedists or orthopedic surgeons); Brain and nervous system specialists (neurologists); Eye disease specialists (ophthalmologists); Genetic specialists (geneticists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Children's Craniofacial Association and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Would IRX5 gene testing help our family?
How can we protect bones and lower fracture risk?
How should vision and hearing be checked?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Recessive
GenesIRX5

It is caused by changes in the IRX5 gene. It is autosomal recessive, meaning a child inherits a changed copy of the gene from each parent.

GeneticNeurological

Also known as: craniofacial dysplasia osteopenia syndrome; facial dysmorphism-ocular anomalies-osteopenia-intellectual disability-dental anomalies syndrome; hamamy syndrome

Patient organizations

Source: NIH GARD · Craniofacial dysplasia - osteopenia syndromeGARD ID 17422 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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