Hearing & Dental Issues in Gorlin-Chaudhry-Moss Syndrome

Craniosynostosis-dysmorphism-brachydactyly syndrome (also known as Gorlin-Chaudhry-Moss syndrome or Fontaine progeroid syndrome) is a rare genetic condition that affects more than just the visible features of the skull and limbs ^[1]. The genetic mutations responsible for this condition—specifically in the SLC25A24 gene—can also broadly affect systemic development ^[2]. For families, this means it is important to watch out for other health issues, particularly dental anomalies like delayed or missing teeth, and hearing loss ^[1][3]. Because of these risks, routine audiology and pediatric dental check-ups should be an integral part of your child’s care plan.

Dental Development and Anomalies

Dental anomalies are a recognized and documented clinical feature of this syndrome ^[1]. Because the condition affects how bone and tissue grow, the development of the teeth and jaw is often altered.

• Delayed, Missing, or Small Teeth: Children with this condition may experience delays in when their baby or adult teeth come in. In some cases, the tooth buds never form, resulting in congenitally missing teeth. Additionally, the teeth that do erupt may be abnormally small (microdontia).
• Midface Hypoplasia: A hallmark of the syndrome is midface hypoplasia, which means the middle of the face (including the upper jaw) is underdeveloped ^[4][5]. This smaller jaw size often leaves inadequate room for teeth to grow properly, leading to significant crowding, misaligned teeth, and bite issues (malocclusion) ^[2]. Standard orthodontic interventions, such as palate expanders or braces, are often used to help fix these problems and create space.

Regular visits to a pediatric dentist and eventually an orthodontist (typically starting around age 7) are critical to monitor tooth eruption, manage crowding, and plan for any missing teeth.

Hearing Loss and Ear Function

While hearing loss is not always the first symptom noticed, children with syndromic craniosynostosis conditions generally have a higher likelihood of experiencing hearing loss compared to those with non-syndromic forms ^[3].

• Conductive Hearing Loss: This is the most common type of hearing issue in craniofacial syndromes. It occurs when sound cannot travel efficiently through the middle ear. The severe midface hypoplasia seen in this syndrome can alter the anatomy of the skull base and the Eustachian tubes (the small tubes connecting the middle ear to the back of the throat) ^[2]. When these tubes do not drain fluid properly, it can lead to frequent ear infections and fluid buildup, dampening hearing. Fortunately, this is highly treatable, often with minor interventions like ear tubes (grommets) to help the fluid drain.
• Sensorineural Hearing Loss: This involves nerve-related hearing loss. While severe sensorineural hearing loss is seen in some other more common craniofacial syndromes, it is less specifically documented as a severe feature of this exact syndrome. However, given the general risks associated with syndromic craniosynostosis, it is carefully monitored out of an abundance of caution ^[3]. If needed, modern hearing aids provide excellent support.

Because hearing is essential for speech and language development, early detection is vital. Routine audiology evaluations (hearing tests) should be conducted regularly, even if you have not noticed any obvious hearing difficulties.

Building Your Proactive Care Plan

Managing the systemic impacts of craniosynostosis-dysmorphism-brachydactyly syndrome requires a team approach, ideally coordinated through a multidisciplinary craniofacial center.

• Establish a Dental Home: Connect with a pediatric dentist early—ideally by your child’s first birthday or when their first tooth emerges. Around age 7, panoramic X-rays will typically be used to track the presence of adult tooth buds.
• Schedule Routine Hearing Tests: Ensure your child has a baseline audiology exam upon diagnosis and regular follow-up screenings.
• Monitor for Ear Infections: If your child frequently tugs at their ears, seems irritable, or has trouble responding to sounds, consult your pediatrician or an Ear, Nose, and Throat (ENT) specialist.