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Diseases » Triple-X syndrome » Summary

What is Triple-X syndrome?

What is Triple-X syndrome?

A rare chromosomal genetic syndrome with one or more extra X chromosomes, leading to XXX (or more rarely XXXX or XXXXX), ...more »

  • Triple-X syndrome: A condition that is characterised by the occurrence of three X chromosomes.
  • Triple-X syndrome: A rare chromosomal aberration characterized by the presence of three X (female) chromosomes. The condition does not exhibit a distinctive phenotype and majority of the affected females are physically and mentally normal. Abnormalities are infrequent and do not occur with any regularity--they include hypertelorism, epicanthal folds, depressed nasal bridge, kyphosis and variable other anomalies. Delay in growth and mental development, when present, is usually mild. Occasionally associated with Prader-Willi syndrome.
    Source - Diseases Database

Triple-X syndrome is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). This means that Triple-X syndrome, or a subtype of Triple-X syndrome, affects less than 200,000 people in the US population.
Source - National Institutes of Health (NIH)

Ophanet, a consortium of European partners, currently defines a condition rare when it affects 1 person per 2,000. They list Triple-X syndrome as a "rare disease".
Source - Orphanet

Triple-X syndrome: Introduction

Types of Triple-X syndrome:

Types of Triple-X syndrome:

Broader types of Triple-X syndrome:

How many people get Triple-X syndrome?

Prevalance of Triple-X syndrome: 1 per 1,000 newborn girls suffer from triple X syndrome, Genetics Home Reference website
Prevalance Rate of Triple-X syndrome: approx 1 in 1,000 or 0.10% or 272,000 people in USA [about data]
Incidence (annual) of Triple-X syndrome: 5-10 girls are born with triple X syndrome each day, Genetics Home Reference website
Incidence Rate of Triple-X syndrome: approx 1 in 54,400,000 or 0.00% or 5 people in USA [about data]

How serious is Triple-X syndrome?

Complications of Triple-X syndrome: see complications of Triple-X syndrome

What causes Triple-X syndrome?

Causes of Triple-X syndrome: see causes of Triple-X syndrome

What are the symptoms of Triple-X syndrome?

Symptoms of Triple-X syndrome: see symptoms of Triple-X syndrome

Complications of Triple-X syndrome: see complications of Triple-X syndrome

Can anyone else get Triple-X syndrome?

Inheritance of genetic conditions: see details in inheritance of genetic diseases.

How is it treated?

Doctors and Medical Specialists for Triple-X syndrome: Medical Geneticist ; see also doctors and medical specialists for Triple-X syndrome.
Treatments for Triple-X syndrome: see treatments for Triple-X syndrome
Research for Triple-X syndrome: see research for Triple-X syndrome

Organs Affected by Triple-X syndrome:

Organs and body systems related to Triple-X syndrome include:

Name and Aliases of Triple-X syndrome

Main name of condition: Triple-X syndrome

Class of Condition for Triple-X syndrome: genetic sex chromosomal

Other names or spellings for Triple-X syndrome:

XXX syndrome, trisomy X

47 XXX syndrome, Triple-X chromosome syndrome Source - Diseases Database

Triple-X chromosome syndrome, Triple-X female, XXX syndrome, Trisomy X, 47,XXX syndrome, Super female, 47,XXX syndrome, Super female, Triple-X chromosome syndrome, Triple-X female, XXX syndrome
Source - Office of Rare Diseases (ORD) of the National Institutes of Health (NIH)

Triple-X syndrome: Related Conditions

Research the causes of these diseases that are similar to, or related to, Triple-X syndrome:


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