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Living with Cole-Carpenter syndrome

An extremely rare bone condition with fragile bones and fractures, along with growth, skull and facial differences.

Understanding Cole-Carpenter syndrome

Cole-Carpenter syndrome is an extremely rare bone condition with fragile bones that break easily, plus differences in the skull and face.

It has features of osteogenesis imperfecta, such as many fractures, bowed bones and blue-tinted whites of the eyes. It can also involve slow growth, early closing of skull joints (craniosynostosis), fluid build-up around the brain (hydrocephalus) and bulging eyes. It is seen in newborns.

Signs & symptoms

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

  • Bones that break often (recurrent fractures)
  • Bowing of the long bones
  • Fluid build-up in the brain (hydrocephalus)
  • Bulging eyes (proptosis)
  • Prominent forehead and small lower jaw
  • Low muscle tone and delayed tooth eruption

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, eye disease specialists and genetic specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Bone and joint specialists (orthopedists or orthopedic surgeons); 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 rare disease patient organizations for support
  • 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 genetic testing help find the cause in our family?
How can we protect bones and lower the risk of fractures?
Do we need regular checks for fluid pressure in the brain?

Quick facts

Symptoms usually startNewborn
InheritanceAutosomal Dominant, Autosomal Recessive

GARD says changes in genes cause this condition. It can be inherited in an autosomal dominant or autosomal recessive pattern.

Genetic

Also known as: bone fragility-craniosynostosis-proptosis-hydrocephalus syndrome; bone fragility, craniosynostosis, proptosis, hydrocephalus syndrome; cole carpenter syndrome; cole-carpenter dysplasia

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Cole-Carpenter syndromeGARD ID 1425 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Cole-Carpenter syndrome.

Explore the Cole-Carpenter syndrome blog

Explore research for Cole-Carpenter syndrome

Explore actively recruiting Cole-Carpenter syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Cole-Carpenter syndrome with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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