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Living with Autism spectrum disorder due to AUTS2 deficiency

A genetic condition with developmental delay, autism spectrum features, and distinctive physical features, often with a friendly personality.

Understanding Autism spectrum disorder due to AUTS2 deficiency

Autism spectrum disorder due to AUTS2 deficiency is a rare genetic condition with developmental delay, intellectual disability, and autism spectrum disorder.

People can have borderline to severe intellectual disability, repetitive behaviors, hyperactivity, and often a friendly and affable personality. Other features include feeding difficulties, short stature, low muscle tone, a small head, and distinctive facial features. Spine curves, hernias, heart differences, and seizures can also occur. It is noticed in newborns and infants.

Signs & symptoms

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

  • Delayed development and intellectual disability
  • Autism spectrum behaviors
  • Delayed speech and language
  • Low muscle tone
  • Feeding difficulties in infancy
  • Small head (microcephaly)

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 brain and nervous system specialists and genetic specialists.

  3. Consider genetic testing

    Changes in AUTS2 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); 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 Simons Searchlight 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
What therapies help with speech, learning, and behavior?
What feeding support can help in infancy?
Which other body systems, like heart or spine, should be checked?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Dominant
GenesAUTS2

GARD says changes in the AUTS2 gene cause this condition. It is autosomal dominant, meaning one changed copy of the gene is enough to cause it.

GeneticNeurological

Also known as: asd due to auts2 deficiency; auts2 syndrome; intellectual developmental disorder, autosomal dominant 26; intellectual disability type 26

Patient organizations

Source: NIH GARD · Autism spectrum disorder due to AUTS2 deficiencyGARD ID 17520 · 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 Autism spectrum disorder due to AUTS2 deficiency.

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