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Cranioectodermal dysplasia
Reviewed by Medicinsk Expert•Last updated: 2026-10-22•Condition

Cranioectodermal Dysplasia

Cranioectodermal dysplasia is a rare genetic disorder characterized by bone abnormalities and the abnormal development of ectodermal tissues, including the skin, hair, nails, and teeth.

Overview

Cranioectodermal dysplasia is a disorder that affects many parts of the body. The most common features involve bone abnormalities and abnormal development of certain tissues known as ectodermal tissues, which include the skin, hair, nails, and teeth. The signs and symptoms of this condition vary among affected individuals, even among members of the same family.

Symptoms

Distinctive abnormalities of the skull and face are common in people with cranioectodermal dysplasia. Most affected individuals have a prominent forehead and an elongated head due to abnormal fusion of certain skull bones (sagittal craniosynostosis). A variety of facial abnormalities can occur, including:

  • Low-set ears
  • An increased distance between the inner corners of the eyes
  • Outside corners of the eyes that point upward or downward

Development of bones in the rest of the skeleton is also affected in this condition. Abnormalities in the long bones of the arms and legs (metaphyseal dysplasia) lead to short limbs and short stature. In addition, affected individuals often have short fingers. Some people with this condition have short rib bones and a narrow rib cage, which can cause breathing problems, especially in affected newborns.

Abnormal development of ectodermal tissues in people with cranioectodermal dysplasia can lead to:

  • Sparse hair
  • Missing teeth
  • Short fingernails
  • Loose skin

Cranioectodermal dysplasia can affect additional organs and tissues in the body. A kidney disorder known as nephronophthisis occurs in many people with this condition, and it can lead to a life-threatening failure of kidney function known as end-stage renal disease. Abnormalities of the liver, heart, or eyes also occur in people with cranioectodermal dysplasia.

Frequency

Cranioectodermal dysplasia is a rare condition with an unknown prevalence. Approximately 40 cases of this condition have been described in the medical literature.

Causes & Risk Factors

Cranioectodermal dysplasia is caused by mutations in one of at least four genes: the WDR35, IFT122, WDR19, or IFT43 gene. The protein produced from each of these genes is one piece (subunit) of a protein complex called IFT complex A (IFT-A). This complex is found in finger-like structures called cilia that stick out from the surface of cells. These structures are important for the development and function of many types of cells and tissues.

The IFT-A complex is involved in a process called intraflagellar transport. This movement is essential for the assembly and maintenance of cilia, as the IFT-A complex carries materials from the tip to the base of cilia. Mutations in any of the four mentioned genes reduce the amount or function of one of the IFT-A subunits. Shortage or abnormal function of a single component of the IFT-A complex impairs the function of the entire complex, disrupting the assembly and maintenance of cilia. These mutations lead to a smaller number of cilia and to abnormalities in their shape and structure. Although the mechanism is unclear, a loss of normal cilia impedes proper development of bone, ectodermal tissues, and other tissues and organs, leading to the features of cranioectodermal dysplasia.

About 40 percent of people with cranioectodermal dysplasia have mutations in one of the four known genes. The cause of the condition in people without mutations in one of these genes is unknown.

Associated Genes

  • IFT122
  • IFT43
  • WDR19
  • WDR35

Inheritance

This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition.

Other Names for This Condition

  • CED
  • Sensenbrenner syndrome

Frequently Asked Questions

Surgical correction of craniosynostosis is usually performed between 6 and 12 months of age to allow for brain growth and to reduce intracranial pressure. Rib cage expansion or thoracoplasty may be considered in infants with severe respiratory compromise due to a narrow chest. Outcomes vary; early surgery can improve head shape, reduce the risk of neurodevelopmental delays, and enhance breathing, but it carries typical surgical risks and may require multiple procedures. A multidisciplinary team—including neurosurgery, thoracic surgery, and genetics—should guide timing and approach.
Dental evaluation should begin in early childhood. Prosthetic options such as removable partial dentures or implant‑supported prostheses can improve chewing and speech. Orthodontic treatment may involve braces or functional appliances to correct malocclusion, but the short stature and potential bone density issues necessitate careful planning. Regular follow‑up with a pediatric dentist and orthodontist familiar with ectodermal dysplasias ensures that interventions are tailored to the patient’s growth and bone health.===
newborn with cranioectodermal dysplasia often shows a prominent forehead, an elongated head shape, and a high‑arched or bifrontal skull due to sagittal craniosynostosis. Additional clues include low‑set ears, widely spaced eyes (hypertelorism), and a short, broad nose. On the extremities, the infant may have noticeably short fingers or a narrow rib cage that can be detected on a chest X‑ray. If these features are present, a genetic evaluation and imaging studies should be pursued early to confirm the diagnosis.
Regular renal assessment is essential because nephronophthisis can progress to end‑stage renal disease. Baseline tests include serum creatinine, estimated glomerular filtration rate (eGFR), urinalysis for proteinuria, and ultrasound of the kidneys. Follow‑up should occur at least every 6 months, or more frequently if abnormalities are detected. Early referral to a nephrologist can allow for timely initiation of supportive measures such as blood pressure control, anemia management, and, if necessary, preparation for dialysis or transplantation.
Source: MedlinePlus, National Library of Medicine

MedlinePlus brings together authoritative health information from the National Library of Medicine (NLM), the National Institutes of Health (NIH), and other government agencies and health-related organizations.

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