Living with TELO2-related intellectual disability-neurodevelopmental disorder
A rare genetic condition with delayed development, low muscle tone, small head, and movement and balance problems.
Understanding TELO2-related intellectual disability-neurodevelopmental disorder
Children have global developmental delay, intellectual disability, low muscle tone in infancy, and a small head. They also have movement and balance problems. Other features vary and can include hearing loss, vision problems from the brain, finger and toe differences, heart differences, a curved spine, sleep problems, and seizures. Signs are seen in the newborn period.
Signs & symptoms
Symptoms vary from person to person. GARD lists these among the most common:
- Delayed development and intellectual disability
- Low muscle tone in infancy
- Small head (microcephaly)
- Movement and balance problems
- Little or no speech
- Seizures and hearing loss
Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.
Diagnosis
- 1Talk with your doctor
Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.
- 2See a specialist
Specialists who may be involved include brain and nervous system specialists, eye disease specialists and genetic specialists.
- 3Consider genetic testing
Changes in TELO2 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); Eye disease specialists (ophthalmologists); 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
Quick facts
Changes in the TELO2 gene cause this condition. It is autosomal recessive, meaning a child inherits a changed copy of the gene from each parent.
Also known as: telo2-related intellectual disability, neurodevelopmental disorder; telomere maintenance 2-related intellectual disability, neurodevelopmental disorder; you hoover fong syndrome; you-hoover-fong syndrome
Patient organizations
Rare-disease groups that can help
- Global GenesRare Diseases · United States
- National Organization for Rare DisordersRare Diseases · United States
- Genetic AllianceRare Diseases · United States
- RARE FoundationRare Diseases · United States
You are more than your diagnosis
Perspectives from people navigating life with TELO2-related intellectual disability-neurodevelopmental disorder.
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