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Living with X-linked intellectual disability-cerebellar hypoplasia-spondylo-epiphyseal dysplasia syndrome

A rare X-linked condition with developmental delay, poor coordination, bone differences, and a small cerebellum.

Understanding X-linked intellectual disability-cerebellar hypoplasia-spondylo-epiphyseal dysplasia syndrome

This is a rare genetic syndrome with developmental delay, intellectual disability, slow growth, low muscle tone, and poor coordination.

It also includes spondyloepiphyseal dysplasia (bone growth differences in the spine and joints) and facial features such as a small head and prominent ears. Epilepsy, retinitis pigmentosa (an eye condition), and urinary and genital differences have been reported. Brain scans may show a small cerebellum.

Signs & symptoms

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

  • Global developmental delay
  • Severe intellectual disability
  • Poor coordination (ataxia)
  • Low muscle tone in infancy
  • Seizures
  • Small cerebellum

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 and genetic specialists.

  3. Consider genetic testing

    Changes in RPL10 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
Bone and joint specialists (orthopedists or orthopedic surgeons); 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 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
Could RPL10 genetic testing help our family?
Which therapies can support speech and movement?
Which specialists should be on my child's care team?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceX-Linked
GenesRPL10

This condition is caused by changes in the RPL10 gene and follows X-linked inheritance.

GeneticNeurological

Also known as: x-linked intellectual disability, cerebellar hypoplasia, spondyloepiphyseal dysplasia syndrome

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · X-linked intellectual disability-cerebellar hypoplasia-spondylo-epiphyseal dysplasia syndromeGARD ID 17815 · 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 X-linked intellectual disability-cerebellar hypoplasia-spondylo-epiphyseal dysplasia syndrome.

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