TRIPLE X SYNDROME

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DEFINITION

• when there is a presence of an extra X chromosome
• causes a malformed egg
• when there is 3 X chromosomes instead of 2
• the extra chromosome doesn't appear until early
• can cause developmental delays or disabilities

DESCRIPTION

• tall stature
• vertical skin folds that may cover inner corners of eyes
• delayed development of speech and language skills
• weak muscle tone
• premature ovarian failure or ovary problems

CAUSES

• it is not inherited
• usually occurs at random during the reproductive formation
• an error in cell division called nondisjunction
• results in the abnormal amount of X chromosomes
• it is a mutation and not triggered by other factors

HOW IS IT INHERITED

• it is not a sex-linked but can be a gamete mutation
• it is located on the X chromosome
• it is recessive

HOW IS IT TREATED?

• could result in counseling
• otherwise not treatable
• gene therapy is optional

HOW IS IT DIAGNOSED

• pre-natal: amniocentesis testing or chronic sampling
• after birth: analysis on blood samples

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