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Living with Charlie M syndrome

A rare condition present from birth with a small jaw and mouth, finger and toe differences, and cleft palate.

Understanding Charlie M syndrome

Charlie M syndrome is a rare condition present from birth, part of a group of conditions with differences in the jaw and limbs.

Typical features include an underdeveloped lower jaw, variable limb differences like joined or split fingers, a small mouth, cleft palate, and missing teeth. Other signs can include facial paralysis, uneven face, wide-set eyes, and a small or absent tongue. GARD notes there have been no further descriptions in the medical literature since 1976.

Signs & symptoms

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

  • Small lower jaw (micrognathia)
  • Narrow mouth
  • Joined fingers (syndactyly)
  • Missing teeth
  • Thin lips
  • Differences in fingernails and toenails

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, ear, nose, and throat 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); Ear, nose, and throat specialists (otolaryngologists); 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
What care is needed for feeding and the cleft palate?
What surgery or therapy might help the jaw and limbs?
Could genetic counseling help our family?

Quick facts

Symptoms usually startNewborn

GARD says changes in genes cause this condition, but doesn't list a specific gene or how it is inherited.

Genetic

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Charlie M syndromeGARD ID 1261 · 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 Charlie M syndrome.

Explore the Charlie M syndrome blog

Explore research for Charlie M syndrome

Explore actively recruiting Charlie M syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Charlie M 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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