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Living with Intellectual disability-facial dysmorphism syndrome due to SETD5 haploinsufficiency

A rare genetic condition (SETD5-related) that affects brain development, facial features, and several body systems.

Understanding Intellectual disability-facial dysmorphism syndrome due to SETD5 haploinsufficiency

Intellectual disability-facial dysmorphism syndrome due to SETD5 haploinsufficiency is a rare genetic disease that affects brain development, facial features, and several body systems.

It is linked to having only one working copy of the SETD5 gene. Intellectual disability ranges from mild to more severe. Many people have low muscle tone, delays in sitting, standing, or walking, and feeding trouble in infancy. Autism and slow growth are possible. Less often there are heart, digestive, or kidney differences.

Signs & symptoms

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

  • Intellectual disability
  • Low muscle tone and delayed walking
  • Autistic behavior
  • Nearsightedness and astigmatism
  • Bulbous nose
  • Broad end bones in the fingers

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

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

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

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
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 Simons Searchlight
  • 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
Can genetic testing for the SETD5 gene confirm the diagnosis?
Which therapies help with feeding and motor skills?
Should heart, kidney, or digestive checks be done?

Quick facts

InheritanceAutosomal Dominant

It is linked to having only one working copy of the SETD5 gene (haploinsufficiency). It is inherited in an autosomal dominant pattern.

Also known as: autosomal dominant intellectual disability 23; intellectual developmental disorder, autosomal dominant 23; intellectual disability, autosomal dominant type 23; mrd23

Patient organizations

  • Simons SearchlightIntellectual disability-facial dysmorphism syndrome due to SETD5 haploinsufficiency · United States
Source: NIH GARD · Intellectual disability-facial dysmorphism syndrome due to SETD5 haploinsufficiencyGARD ID 17673 · 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 Intellectual disability-facial dysmorphism syndrome due to SETD5 haploinsufficiency.

Explore the Intellectual disability-facial dysmorphism syndrome due to SETD5 haploinsufficiency blog

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HealthSpark

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  • Recruiting studies from ClinicalTrials.gov
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  • 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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