Living with Pentasomy X
A chromosome condition in females with three extra X chromosomes, causing delays in development and certain physical features.
Understanding Pentasomy X
It is noticed in newborns. Features include delays in development, intellectual disability, short height, low muscle tone, and certain facial and hand features.
Signs & symptoms
Symptoms vary from person to person. GARD lists these among the most common:
- Delays in development
- Intellectual disability
- Short height
- Low muscle tone (hypotonia)
- Small head (microcephaly)
- Wide-set eyes and a wide nasal bridge
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 genetic specialists.
- 3Ask which tests can help
Your care team will decide which exams and tests can confirm the diagnosis.
- 4Connect with expert centers
Association for X and Y Chromosome Variations may keep lists of experts for this condition.
Care & treatment
- Care team
- Genetic specialists (geneticists)
- Expert care
- Expert lists: Association for X and Y Chromosome Variations
- 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 Association for X and Y Chromosome Variations 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
Quick facts
An extra three copies of the X chromosome in each cell cause this condition.
Also known as: 49, xxxxx syndrome; 49,xxxxx syndrome; penta x syndrome; penta-x; pentasomy type x; poly-x
Patient organizations
- Association for X and Y Chromosome VariationsPentasomy X · United States
- Chromodiversity FoundationPentasomy X · Chromosome Disorder Outreach
You are more than your diagnosis
Perspectives from people navigating life with Pentasomy X.
Explore research for Pentasomy X
Explore actively recruiting Pentasomy X studies with HealthSpark.
Find actively recruiting studies for Pentasomy X 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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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.
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