Diseases » Triple-X syndrome » Introduction

Triple-X syndrome

Triple-X syndrome: Introduction

A rare chromosomal genetic syndrome with one or more extra X chromosomes, leading to XXX (or more rarely XXXX or XXXXX), instead of the usual XX (female) or XY (male). These people are females as they have no Y male chromosome, but have an additional female X chromosome. Women can be largely unaffected, or may suffer from problems such as infertility (some but not all), and reduced mental acuity. ...more »

Symptoms of Triple-X syndrome

• No symptoms
• more symptoms...»

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Wrongly Diagnosed with Triple-X syndrome?

• Failure to diagnose Triple-X syndrome
• Undiagnosed: Triple-X syndrome

Triple-X syndrome: Related Patient Stories

• Triple X Syndrome
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• X-linked agamglobulinemia
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• Depo Provera Shot... Please help, I'm at my wits end x
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Types of Triple-X syndrome

• XXXX syndrome
• XXXXX syndrome
• more types...»

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Triple-X syndrome: Complications

Review possible medical complications related to Triple-X syndrome:

• Infertility - some patients but not all.
• Mental slowness - some patients but not all.
• more complications...»

Causes of Triple-X syndrome

Read more about causes of Triple-X syndrome.

Disease Topics Related To Triple-X syndrome

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

• Trisomy X
• Delayed development of motor skills
• Weak muscle tone
• Behavioral and emotional difficulties
• more related diseases...»

Evidence Based Medicine Research for Triple-X syndrome

Medical research articles related to Triple-X syndrome include:

• What is the likelihood that trisomy XXX will be passed from a mother to her offspring, and does she need prenatal diagnosis?
• more research...»

Click here to find more evidence-based articles on the TRIP Database

Research about Triple-X syndrome

Visit our research pages for current research about Triple-X syndrome treatments.

Statistics for Triple-X syndrome

• Medical statistics for Triple-X syndrome
• Prevalence and incidence statistics for Triple-X syndrome
• Death and Mortality statistics for Triple-X syndrome
• Society statistics for Triple-X syndrome

Triple-X syndrome: Broader Related Topics

• Sex chromosome conditions
• Intersex conditions
• X Chromosome Disorders
• Genetic conditions
• more types...»

Types of Triple-X syndrome

Triple-X syndrome Message Boards

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Definitions of 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

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