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Living with FRAXE

A genetic condition (fragile XE syndrome) that mainly affects thinking and learning, often mildly.

Understanding FRAXE

FRAXE, also called fragile XE syndrome, is a genetic disorder that affects thinking ability and cognitive functioning.

Most people have mild intellectual disability, and some have borderline cognitive function. Females are rarely diagnosed, likely because signs are mild or absent. Learning disabilities are the most common sign, and can be linked to delayed speech, poor writing, hyperactivity, and a short attention span. Some people show autistic behaviors. Cognitive ability stays steady and does not decline with age.

Signs & symptoms

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

  • Learning disabilities
  • Intellectual disability, usually mild
  • Delayed speech and language
  • Hyperactivity and short attention span
  • Autistic behaviors (hand flapping, repetitive behavior)
  • Short stature

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 AFF2 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
  • 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 AFF2 genetic testing confirm the diagnosis?
Which educational supports would help?
Should other family members be tested?

Quick facts

Symptoms usually startduring Pregnancy, at Birth, and as an Infant
InheritanceX-Linked
GenesAFF2

Changes in the AFF2 gene cause it. It is X-linked, which means the gene is on the X chromosome.

GeneticNeurological

Also known as: fragile xe syndrome; fraxe intellectual disability; fraxe intellectual disability syndrome; fraxe syndrome; intellectual developmental disorder, x-linked 109; intellectual developmental disorder, x-linked 109, x-linked recessive

Patient organizations

Source: NIH GARD · FRAXEGARD ID 2378 · 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 FRAXE.

Explore the FRAXE blog

Explore research for FRAXE

Explore actively recruiting FRAXE studies with HealthSpark.

HealthSpark

Find actively recruiting studies for FRAXE 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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I can help you find recruiting FRAXE studies. Enter a ZIP code, address or city below and I'll look within 50 miles.

Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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