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Living with Mandibulofacial dysostosis-microcephaly syndrome

A genetic condition from birth that affects the head and face, hearing, and learning.

Understanding Mandibulofacial dysostosis-microcephaly syndrome

Mandibulofacial dysostosis with microcephaly (MFDM) is a genetic condition that causes differences in the head and face.

Babies often have a small head that grows more slowly than the body. People have developmental delay and intellectual disability from mild to severe, and speech problems are common. Face and ear differences often lead to hearing loss. Some have a cleft palate, blocked nasal passages, heart problems, thumb differences, or a blocked esophagus.

Signs & symptoms

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

  • Small lower jaw (micrognathia)
  • Underdeveloped cheekbones and upper jaw
  • Small, unusually shaped ears
  • Cleft palate
  • Intellectual disability and delayed speech
  • Feeding difficulties

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, ear, nose, and throat specialists and genetic specialists.

  3. Consider genetic testing

    Changes in EFTUD2 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    World Craniofacial Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Bone and joint specialists (orthopedists or orthopedic surgeons); Brain and nervous system specialists (neurologists); Ear, nose, and throat specialists (otolaryngologists); Genetic specialists (geneticists)
Expert care
Expert lists: World Craniofacial Foundation
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 FACES: The National 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
Should we have EFTUD2 genetic testing for our family?
How can hearing be tested and supported?
Which specialists should follow breathing, feeding, and development?

Quick facts

Symptoms usually startNewborn
InheritanceAutosomal Dominant
GenesEFTUD2

Changes in the EFTUD2 gene cause this condition. It is inherited in an autosomal dominant way, so a change in one copy of the gene can be enough.

GeneticNeurological

Also known as: mandibulofacial dysostosis with microcephaly; mandibulofacial dysostosis, guion-almeida type; mfdga; mfdm syndrome

Patient organizations

Source: NIH GARD · Mandibulofacial dysostosis-microcephaly syndromeGARD ID 10056 · 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 Mandibulofacial dysostosis-microcephaly syndrome.

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