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Living with Chromosome 1p36 deletion syndrome

A chromosome condition that causes intellectual disability, limited speech, low muscle tone, seizures, and distinct facial features.

Understanding Chromosome 1p36 deletion syndrome

Chromosome 1p36 deletion syndrome is a disorder that typically causes intellectual disability.

Most people do not speak or speak only a few words, and some have temper tantrums or bite themselves. Most have brain differences, and seizures occur in more than half. Low muscle tone and trouble swallowing are usual. People have a small, short, wide head and distinct facial features, and often short fingers and toes. GARD lists onset during pregnancy and at birth.

Signs & symptoms

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

  • Absent or limited speech
  • Small head size (microcephaly)
  • Walking or gait problems
  • Acid reflux
  • Vision problems
  • Heart differences

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, genetic specialists, heart and blood vessel specialists and seizure and epilepsy specialists.

  3. Ask which tests can help

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

  4. Connect with expert centers

    Children's Cardiomyopathy Foundation and Epilepsy Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Genetic specialists (geneticists); Heart and blood vessel specialists (cardiologists); Seizure and epilepsy specialists (epileptologist)
Expert care
Expert lists: Children's Cardiomyopathy Foundation, Epilepsy Foundation
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 1p36 Deletion Support & Awareness 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
Should we watch for seizures and have brain imaging?
How can we help with swallowing and feeding?
What therapies can support communication?

Quick facts

Symptoms usually startduring Pregnancy and as a Newborn

GARD says it is caused by a missing piece (deletion) of chromosome 1 at 1p36.

GeneticNeurological

Also known as: 1p telomere deletion syndrome; 1p36; 1p36 deletion syndrome; 1p36 microdeletion syndrome; 1p36.33 deletion; chromosome 1p36 deletion syndrome, distal, isolated cases

Patient organizations

Source: NIH GARD · Chromosome 1p36 deletion syndromeGARD ID 6082 · 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 Chromosome 1p36 deletion syndrome.

Explore the Chromosome 1p36 deletion syndrome blog

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Explore actively recruiting Chromosome 1p36 deletion syndrome studies with HealthSpark.

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